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NW5139

型号：

NW5139

描述：

BOOST CONVERT控制IC[ BOOST CONVERT CONTROL IC ]

品牌：

ETC[ ETC ]

页数：

17 页

PDF大小：

644 K

下载PDF手册
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NW5139  
Technology  
BOOST CONVERT CONTROL IC  
GENERAL DESCRIPTION  
The NW5139B is a boost topology switching regulator control IC for battery-used applications  
field. The NW5139B includes a totem-pole single output stage for driving NPN transistor or  
N-MOS, high precision reference (0.5V) for comparing output voltage with feedback amplifier,  
an internal dead-time control for controlling the minimum duty cycle, programmable soft start  
with short circuit protection function and logic level control for operating mode or standby  
mode.  
FEATURES  
˙ Wide supply voltage operating range: 1.8 to 15V  
˙ Reference voltage precision: 2%  
˙ Low current consumption: Operation Mode 5.5mA  
Standby-by Mode 1µA  
˙ High speed oscillator frequency: 1MHz max.  
˙ Programmable Soft Start function (SS)  
˙ Short Circuit Protection function(SCP)  
˙ Totem-pole output with adjustable on/off current  
(for NPN transistors or n-channel MOSFET)  
˙ Logic level control stand-by mode function  
˙ Package: SOP8/TSSOP8/MSOP8  
TSSOP8  
TYPICAL APPLICATION  
˙ Digital Camera  
˙ PDA  
M SO P8  
˙ Portable Equipment  
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NW5139B  
FUNCTIONAL BLOCK DIAGRAM  
3
7
Reference  
Sawtooth wave  
oscillator  
0.6V  
0.1V  
voltage supply  
5
1.25V  
0.1V  
PWM  
30k  
1
8
Comp.  
36k  
+
+
+
Output drive  
control circuit  
+
Error Amp.  
500  
0.5V  
DTC 0.6V  
0.22V  
Soft start SCP  
2
6
4
MARK VIEW  
PIN DESCRIPTION  
Name No. I/O  
Description  
FB  
1
2
I
I
Error amplifier inverting input pin  
Connected a capacitor  
1
2
3
4
8
7
6
5
SCP  
Soft start and SCP function pin  
IC power supply  
Output current setting and control pin  
Totem-pole output  
VCC  
BR/CTL  
OUT  
3
4
5
6
P
I
O
P
GND  
IC ground  
Capacitor and resistor connected for  
OSC  
7
8
I
the frequency of oscillation  
COMP  
O
Error amplifier compensation output  
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NW5139B  
Technology  
ORDER INFORMATION  
Part Number  
NW5139BD-LF  
NW5139BDR-LF  
NW5139BW-LF  
NW5139BWR-LF  
NW5139BT-LF  
NW5139BTR-LF  
Operating Temperature  
-10°C ~ +85°C  
-10°C ~ +85°C  
-10°C ~ +85°C  
-10°C ~ +85°C  
-10°C ~ +85°C  
-10°C ~ +85°C  
Package  
SOP8  
SOP8  
TSSOP8  
TSSOP8  
MSOP8  
MSOP8  
Description  
Tube  
Tape & Reel  
Tube  
Tape & Reel  
Tube  
Tape & Reel  
IC DATE CODE DISTINGUISH  
NW5139  
-
L
Lead Free  
Lot Number  
Mass Production Version  
Per Half Month  
Year  
FOR EXAMPLE:  
January  
February  
March  
A (Front Half Month), B (Last Half Month)  
C, D  
E, F  
------------And so on  
Lot Number is the last two numbers  
For Example:  
A3311C62  
LotNumber  
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NW5139B  
Technology  
ABSOLUTE MAXIMUM RATINGS  
Power supply voltage--------------------------------------------------------------------------- +15V  
Output source current------------------------------------------------------------------------- -50mA  
Output sink current------------------------------------------------------------------------------ +50mA  
Allowable dissipation  
SOP8  
Ta≦+25℃------------------------------------------------------------ 570mW  
MSOP8 Ta≦+25℃----------------------------------------------------------- 400mW  
TSSOP8 Ta≦+25℃----------------------------------------------------------- 400mW  
Operating temperature--------------------------------------------------------------- -10℃∼ +85℃  
Storage temperature------------------------------------------------------------------ -55℃∼ +125℃  
SOP8 Lead Temperature (soldering, 10 sec) ------------------------------------------+260℃  
TSSOP8 Lead Temperature (soldering, 10 sec) --------------------------------------+260℃  
MSOP8 Lead Temperature (soldering, 10 sec) ---------------------------------------+260℃  
260℃/10sec  
260℃  
-1.2℃/sec  
+0.23℃/sec  
210℃  
180℃  
+3.4℃/sec  
25℃  
280s  
15s 60s  
190s  
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NW5139B  
Technology  
DC ELECTRICAL CHARACTERISTICS  
VCC=2V,TA=25℃  
Under Voltage Lock-Out section (U.V.L.O.)  
PARAMETER  
SYMBOL TEST CONDITIONS  
MIN. TYP. MAX. UNIT  
Low threshold voltage  
Upper threshold voltage  
VLOW  
--  
--  
-
-
0.9  
1.5  
V
V
VUPPER  
1.1  
1.3  
Soft Start section (S.S.)  
PARAMETER  
SYMBOL TEST CONDITIONS  
MIN. TYP. MAX. UNIT  
μA  
Input source current  
Soft start threshold voltage  
ISS  
VSCP= 0V  
--  
-1.5  
0.8  
-1.0  
0.9  
-0.7  
1.0  
VSST  
V
Short Circuit Protection section (S.C.P.)  
PARAMETER  
SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT  
μA  
Input source current  
S.C.P. threshold voltage  
ISCP  
VSCP= 0V  
--  
-1.5  
0.7  
-1.0  
0.8  
-0.7  
0.9  
VSCP  
V
Oscillator section  
PARAMETER  
SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT  
Oscillation frequency  
Frequency change with  
voltage  
f
RT=3.0KΩ,CT=270pF  
400  
-
500  
2
600  
10  
KHz  
%
∆f / ∆V  
VCC=2V to 15V  
Frequency change with  
temperature  
Ta = 0℃to 85℃  
∆f / ∆T  
-
5
-
%
Idle Period Adjustment section  
PARAMETER  
SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT  
RT=3.0kΩ, CT=270pF,  
Maximum duty cycle  
TDUTY  
-
92  
98  
%
VFB=0.8V  
Total device section  
PARAMETER  
SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT  
Stand-by current  
ISTANDBY  
IAVE  
Pin4 is open or VCC  
-
-
-
1
µA  
Average supply current  
RB=390Ω,VCC=0~15V  
5.0  
10  
mA  
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Technology  
DC ELECTRICAL CHARACTERISTICS (Cont.)  
Error Amplifier section  
PARAMETER  
Input threshold voltage  
VT change with voltage  
SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT  
VFB  
VCOMP=450mV  
480  
500  
5
520  
20  
-
mV  
mV  
%
∆VFB / ∆V  
VCC=2V to 15V  
-
Ta = -10℃to 85℃  
VT change with temperature ∆VFB / ∆T  
-
1
Input bias current  
Voltage Gain  
IB  
Av  
--  
-1.0  
-0.2  
100  
6
1.0  
-
µA  
--  
-
V/V  
MHz  
Frequency bandwidth  
BW  
Av=0 dB  
-
0.78  
-
-
Output voltage  
Swing  
Positive  
VPOS  
VNEG  
ISOURCE  
ISINK  
--  
--  
0.87  
0.05  
-40  
40  
-
V
Negative  
0.2  
-24  
-
Output source current  
Output sink current  
-
µA  
µA  
VCOMP=450mV  
24  
Output section  
PARAMETER  
SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT  
Output high voltage  
VOH1  
VOH2  
VOL1  
VOL2  
RB=390Ω, IO=-15mA  
RB=750Ω, IO=-10mA,  
VCC= 1.8V  
1.0  
0.8  
-
1.2  
1.0  
0.1  
0.1  
-
V
V
V
V
Output high voltage  
Output saturation voltage  
Output saturation voltage  
-
RB=390Ω, IO=15mA  
RB=750Ω, IO=10mA,  
VCC= 1.8V  
0.2  
0.2  
-
Output source current  
Output sink current  
IOSOURCE RB=390Ω, Vo=0.9V  
-
-40  
40  
-20  
-
mA  
mA  
kΩ  
IOSINK  
RO  
RB=390Ω, Vo=0.3V  
30  
20  
Internal pull-down resistor  
--  
30  
40  
Output Current Setting / Control section  
PARAMETER  
Pin voltage  
SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT  
VBR  
IOFF  
ION  
RB=390Ω  
0.15  
-20  
-
0.22  
0.3  
0
V
Input off condition  
Input on condition  
Pin current range  
--  
--  
--  
-
-
-
µA  
µA  
mA  
-45  
-0.1  
IBR  
-1.8  
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NW5139B  
Technology  
TYPICAL CHARACTERISTICS  
Supplyvoltagevs.Supplycurrent  
Supplyvoltagevs.Inputthresholdvoltage  
12  
1.2  
Ta=25℃  
RB=390Ω  
Ta=25℃  
1.0  
10  
8
6
4
2
0
0.8  
0.6  
0.4  
0.2  
0
8
8
0
4
12  
16  
20  
0
4
12  
16  
20  
SupplyvoltageVcc(V)  
Figure1  
SupplyvoltageVcc(V)  
Figure2  
Ambienttemperaturevs.Inputthreshod  
voltagevariationratio  
Highleveloutput  
30  
10  
5
1.2  
1.0  
Vcc=2V  
Vcc=2V  
RB=390Ω  
Ta=25℃  
0.8  
0
0.6  
0.4  
0.2  
- 5  
-10  
-15  
-25  
0
25  
50  
75  
100  
0
-10  
-20  
-30  
-40  
-50  
0
AmbientTemperatureTa(℃)  
Figure3  
Highleveloutputcurrent Iout(mA)  
Figure4  
Low leveloutput  
BR/CTL pincurrentvs.Outputsourcecurrent  
600  
500  
400  
300  
200  
100  
-60  
-50  
-40  
-30  
-20  
-10  
Vcc=2V  
RB=390  
Ta=25℃  
Vcc=2V  
Vout=0.9V  
Ta=25℃  
0
0
20  
40  
60  
80  
100  
-0.4  
-0.8  
-1.2  
-1.6  
-2.0  
0
0
Low leveloutputcurrent Iout(mA)  
Figure5  
BR/CTL pincurrentIBR(mA)  
Figure6  
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Technology  
TYPICAL CHARACTERISTICS (Cont.)  
BR/CTL pincurrentvs.BR/CTL pinvoltage  
BR/CTL pincurrentvs.Supplycurrent  
600  
6.0  
Vcc=2V  
Vcc=2V  
Ta=25℃  
Ta=25℃  
500  
5.0  
400  
300  
200  
100  
0
4.0  
3.0  
2.0  
1.0  
0
-0.4  
-0.8  
-1.2  
-1.6  
-2.0  
-20  
-40  
-60  
-80  
-100  
0
0
BR/CTL pincurrentIBR(mA)  
Figure7  
BR/CTL pincurrentIBR(uA)  
Figure8  
TRIANGLE OSCILLATOR FREQUENCY  
Supplyvoltagevs.Frequencyvariationratio  
VS  
15  
TIMING RESISTANCE  
CT=270PF  
RT=3.0KΩ  
Ta= 25℃  
1 M  
100 K  
10 K  
2 K  
Vcc=2V  
10  
5
Ta=25℃  
C
= 100 pF  
T
T
0
C
= 1000 pF  
-5  
-10  
-15  
C
T
= 10000 pF  
8
0
4
12  
16  
20  
1 K  
4 K 10 K  
40 K 100 K  
400 K 1 M  
SupplyvoltageVcc(V)  
Figure 10  
TimingresistorRt(Ω)  
Ambienttemperaturevs.Frequcneyvariationratio  
30  
10  
5
Vcc=2V  
CT=270PF  
RT=3.0KΩ  
0
-
5
-10  
-15  
-25  
0
25  
50  
75  
100  
AmbientTemperatureTa (℃)  
Figure11  
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NW5139B  
Technology  
DETAILED DESCRIPTION  
Voltage reference  
A 1.25V regulator operating from VCC is used to power the internal circuitry of the FP5139B.  
An internal resistive divider provides 0.5V reference for the error amplifier, Soft-start (typ. 0.9V)  
and SCP (typ. 0.8V) circuits.  
Error amplifier  
The error amplifier compares a sample of the dc-dc converter output voltage to the 0.5V  
reference and generates an error signal for the PWM comparator. Output voltage of dc-dc  
converter is setting with the resistor divider using the following expression (see fig12):  
R1  
R2  
Vout = 1+  
∗0.5  
VOUT  
R1  
1
36K  
Error  
Amplifier  
R2  
0.5V  
500  
NW5139B  
8
C1  
Figure 12. Error Amplifier with Feedback resistance divider  
Oscillator  
The oscillator frequency can be set between 20KHz and 500KHz by connecting a resistor and  
a capacitor at OSC pin of NW5139B to ground. The oscillator frequency can be determined by  
using the graph shown in Figure 9.  
The oscillator output is a sawtooth wave with a minimum value of approximately 0.1V and a  
maximum value of approximately 0.6V. The PWM comparator compares the oscillator voltage  
with error amplifier output voltage; internal DTC voltage (typ. 0.6V) and soft start setting  
voltage. When the sawtooth wave voltage is low than above three-output voltage, the output of  
NW5139B is high (Turn on NPN transistor or NMOS).  
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Technology  
Under voltage lockout (UVLO)  
The under voltage lockout circuits turn the output off and whenever the supply voltage drops  
too low (approximately 0.9V at 25℃) for proper operation. A hysteresis voltage of 200mV  
eliminates false triggering on noise and chattering.  
Soft Start/ Short-circuit protection (S.S. / S.C.P.)  
The soft start is functional after power on, and the interval of soft start time is determined by a  
capacitor connected to SCP pin (pin 2). When soft start function finished, the internal soft start  
voltage is setting high, but external SCP pin is setting low in order to change to short circuit  
detection / protection function.  
The time of soft start is following expression:  
Tss = 0.35∗C  
[µF  
]
The short circuit protection is functional due to a heavy loading drop and output of error  
amplifier (COMP pin) is maintain a VPOS (typ. 0.87V), the capacitor is charged until SCP  
threshold voltage (typ. 0.8V), then NW5139B output is disable (internal pull-low) and the  
capacitor is discharged to low.  
The time of short circuit protection is following expression:  
Tscp = 0.8∗C  
[
µF  
]
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NW5139B  
Technology  
Output transistor  
The NW5139B has a totem-pole transistor with a 40mA source/sink current rating to drive an  
external NPN transistor or NMOS directly. The driving current capability depends on a resistor  
R that is connected to BR/CTL pin (Pin4) of FP5139B. (see fig. 14)  
NW5139B  
4
BR/CTL  
R1  
Control  
R2  
Q1  
Figure 13. Output transistor driving control circuit  
BR/CTL pin can also use to control the output of NW5139B for disable or enable function of  
system.  
Control Pin  
Low  
Q1  
Off  
On  
BR/CTL Pin Output Transistor Function  
Mode  
Open  
Disable  
Enable  
Stand-by  
Operation  
High  
Bias Current  
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Technology  
APPLICATION NOTE (1)  
L1  
33uH  
SCD34  
D1  
Vin +2.5V  
Vout +9V/1A  
IC1  
FB  
R1  
C2  
COMP  
OSC  
R2  
51k 1%  
SCP  
C1  
0.027uF  
VCC  
GND  
0
R3  
Q2  
C7  
220uF/25V  
1
C8  
C4  
BR/CTL OUT  
NW5139  
0.1uF  
100uF/35V  
C5  
0.1uF  
R4  
1k  
R6  
3k 1%  
R5  
3k  
C6  
Q1  
3904  
470pF  
ON/OFF Socket  
Vin  
R7 4.7k  
1
2
SW1  
Figure 14. DC12V to DC24V Boost Regulator  
L1  
20uH  
SCD34  
D1  
C9  
Vin +2.5V ~ +6V  
Vout +3.3V  
IC1  
FB  
10u  
R1  
C2  
COMP  
OSC  
R2  
5.6k 1%  
SCP  
VCC  
C1  
0.027uF  
GND  
L2  
20uH  
0
R3  
Q2  
C7  
220uF/25V  
1
C8  
C4  
100uF/35V  
BR/CTL OUT  
NW5139  
MOSFET N GDS  
0.1uF  
C5  
0.1uF  
R4  
1k  
R6  
R5  
3k  
C6  
1k 1%  
Q1  
3904  
470pF  
ON/OFF Socket  
Vin  
R7 4.7k  
1
2
SW1  
Figure 15. DC2.5V~DC6V to DC3.3V SEPIC Regulator  
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NW5139B  
Technology  
APPLICATION NOTE (2)  
D1  
BAT54S/SOT_0  
2
Q1  
Q2  
Vout3  
C1  
C2  
0.1uF  
0.1uF  
3
NPN BEC  
MOSFET P  
2
3
Vout2  
Q3  
1
D2  
BAT54S/SOT_0  
C3  
1uF  
R1  
C4  
R2  
R
1uF  
R
C5  
R3  
R
1uF  
R4  
R5  
R
R6  
R
R7  
C6  
R
1uF  
D3  
1
C8  
1uF  
R8  
R
1
D4  
TL431  
TL431  
R9  
Q4  
NPN  
L1  
L2  
33uH  
33uH  
R10  
R
D5 SCD34  
Vin  
Vout1  
C9  
1uF  
IC1  
FB  
R11  
C11  
1
2
3
4
8
7
6
5
COMP  
OSC  
R12  
51k 1%  
SCP  
VCC  
C10  
0.1uF  
GND  
Vot Socket2  
Vin Socket  
0
R13  
Vout2  
Vout3  
Vin  
Q5  
MOSFET N GDS  
C12  
1
C13  
C14  
C15  
100uF  
1
2
1
2
BR/CTL OUT  
R14  
220uF/6.3V  
100uF  
0.1uF  
C16  
C7  
NW5139  
CON1  
CON2  
1k  
0.1uF  
0.1uF  
R15  
Vot Socket3  
Vot Socket1  
R16  
3k  
C17  
470pF  
Vout1  
3k 1%  
Q6  
NPN 3904  
1
2
1
2
CON3  
CON4  
ON/OFF Socket  
Vin  
R17 4.7k  
1
2
SW1  
Figure 16. Charge Pump DC-DC Converter Circuits  
APPLICATION NOTE (3)  
R9  
R8  
V2  
56K  
R10  
1.8K  
R11  
FB  
V3  
33K  
5.1K  
D2 BAT54HT1  
D3  
L2 33uH  
C8  
+15V  
C9  
R12  
V1  
(R9+R8)=17.48*R12  
3.3K  
0.66*(R8+R9)=(R10+R11)  
+
+
100uF/25V  
47uF/16V  
T1  
VCC  
L1 18uH  
F1  
L3  
V2  
+5V  
4
5
6
33uH  
FUSE  
C2  
104  
C1  
+
R7  
C7  
7
+
C10  
100uF/16V  
+
C11  
47uF/16V  
470pF  
330uF  
1
BAT54RCLT1  
8
2
D4  
D6  
8.2  
9
L4  
33uH  
U1  
V3  
+3.3V  
C13  
COMP  
C5  
1
2
3
4
8
7
6
5
3
10  
FB  
COMP  
Cosc  
GND  
OUT  
+
C12  
+
100uF/16V  
47uF/16V  
SCP  
CLS12  
SCP  
VCC  
CTL  
BAT54RCLT1  
V4  
0.1uF  
C6  
C4  
0.47uF  
L5  
CTL  
1
Q3  
33uH  
-7.5V  
AP2304  
R6  
0
NW5139  
R5  
220  
D5 BAT54HT1  
C14  
100uF/16V  
C15  
47uF/16V  
+
+
R1  
Q2  
2N3904  
R4  
33K  
C3  
270pF  
R3  
3K  
ON / OFF  
C16  
1nF  
R2  
10K  
Figure 17. Flyback Multi-output DC-DC Converter Circuits  
Rev0.2 Nov. 25, 2005  
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NW5139B  
Technology  
TIMING WAVEFORM  
COMP pin Voltage  
Reference input for  
SCP Comparator  
Idle period setting voltage  
Oscillator waveform  
Soft-start setting voltage  
OUT pin waveform  
SS/SCP pin waveform  
Control pin voltage  
tpe  
Output  
Soft-start  
ts  
Short  
Output Short Circuit  
Circuit  
Short Circuit Protection  
IC Shutdown  
Figure 18. NW5139B Timing Diagram  
Rev0.2 Nov. 25, 2005  
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NW5139B  
Technology  
PACKAGE OUTLINE  
SOP8  
0.008typ.  
0.16typ  
0.050typ  
θ°  
D
L
SEATING PLANE  
0.004max  
SYMBOLS  
MIN  
0.053  
MAX  
0.069  
0.010  
0.196  
0.157  
0.244  
0.050  
8
A
A1  
D
0.004  
0.189  
0.150  
0.228  
0.016  
0
E
H
L
θ°  
NOTE:  
1. JEDEC OUTLINE:MS-012 AA  
2. DIMENSIONS “D” DOES NOT INCLUDE MOLD FLASH,PROTRUSIONS OR GATE  
BURRS.MOLD FLASH,PROTRUSIONS AND GATE BURRS SHALL NOT  
EXCEED .15mm (.0.06in) PER SIDE  
3. DIMENSIONS “E” DOES NOT INCLUDE INTER-LEAD FLASH,OR PROTRUSIONS.  
INTER-LEAD FLASH AND PROTRUSIONS SHALL NOT EXCEED .25mm (.0.10in) PER  
SIDE.  
Rev0.2 Nov. 25, 2005  
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NW5139B  
Technology  
MSOP8  
8
5
“A”  
1
4
0.30  
0.65BSC  
GAUEGE PLANE  
θ°  
SEATING PLANE  
D
L
L1  
0.05  
SYMBOLS  
MIN  
MAX  
1.10  
0.15  
0.95  
A
A1  
A2  
D
-
0.00  
0.75  
3.00 BSC  
4.90 BSC  
3.00 BSC  
E
E1  
L
0.40  
0
0.80  
8
L1  
θ°  
0.95 REF  
NOTE:  
1.JEDEC OUTLINE:MO-187 AA  
2.DIMENSIONS “D” DOES NOT INCLUDE MOLD FLASH,PROTRUSIONS OR GATE  
BURRS.MOLD FLASH,PROTRUSIONS AND GATE BURRS SHALL NOT EXCEED 0.15 PER  
SIDE  
3.DIMENSIONS “E1” DOES NOT INCLUDE INTERLEAD FLASH,OR PROTRUSIONS.  
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.25 PER SIDE.  
4.DIMENSIONS “0.22” DOES NOT INCLUDE DAMBAR PROTRUSIONS.ALLOWABLE DAMBAR  
PROTRUSIONS SHALL BE 0.08 MM TOTAL IN EXCESS OF THE ‘0.22’ DIMENSION AT  
MAXIMUM MATERIAL CONDITION.DAMBAR CANNOT BE LOCATED ON THE LOWER RADIUS  
OF THE FOOT.MINIMIM SPAC BETWEEN PROTRUSION AND ADJACENT LEAD IS 0.07MM.  
5.DIMENSIONS “D” AND ‘E1’ TO BE DETERMINED AT DATUM PLANE H  
Rev0.2 Nov. 25, 2005  
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NW5139B  
Technology  
TSSOP8  
SYMBOLS  
MIN  
-
0.05  
0.96  
2.90  
NOR  
-
-
MAX  
1.20  
0.15  
1.06  
3.10  
A
A1  
A2  
D
E
E1  
L
1.01  
3.00  
6.40 BSC  
4.40  
0.60  
4.30  
0.45  
4.50  
0.75  
Θ°  
0
-
8
NOTE:  
1.JEDEC OUTLINE:MO-187 AA  
2.DIMENSIONS “D” DOES NOT INCLUDE MOLD FLASH,PROTRUSIONS OR GATE BURRS.MOLD  
FLASH,PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.15 PER SIDE  
3.DIMENSIONS “E1” DOES NOT INCLUDE INTERLEAD FLASH,OR PROTRUSIONS. INTERLEAD  
FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.25 PER SIDE.  
4.DIMENSIONS “0.22” DOES NOT INCLUDE DAMBAR PROTRUSIONS.ALLOWABLE DAMBAR  
PROTRUSIONS SHALL BE 0.08 MM TOTAL IN EXCESS OF THE ‘0.22’ DIMENSION AT MAXIMUM  
MATERIAL CONDITION.DAMBAR CANNOT BE LOCATED ON THE LOWER RADIUS OF THE  
FOOT.MINIMIM SPAC BETWEEN PROTRUSION AND ADJACENT LEAD IS 0.07MM.  
5.DIMENSIONS “D” AND ‘E1’ TO BE DETERMINED AT DATUM PLANE H  
Rev0.2 Nov 25, 2005  
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