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CYT6119BKG

型号：

CYT6119BKG

描述：

400毫安超级LDO线性稳压器[ 400mA Super LDO Linear Regulator ]

品牌：

ETC[ ETC ]

页数：

6 页

PDF大小：

176 K

下载PDF手册
400mA Super LDO Linear  
Regulator  
CYT6119  
Description  
Features  
¾
¾
¾
Typical 175mV dropout voltage at 150mA.  
The CYT6119 is an efficient linear voltage  
Low Ground current at 65uA. (Typ.)  
regulator. It has extra low dropout voltage. At light  
loads the typical dropout voltage is 15mV, at full  
load the typical dropout voltage is 600mV. The  
output voltage accuracy is better than 2%.  
Guaranteed 400mA output over the full  
operating temperature range.  
¾
¾
Extremely tight load and line regulation.  
Low temperature coefficient.  
The CYT6119 has low ground current at 65uA, ¾ Current and thermal limiting.  
so it can help prolong battery life. The CYT6119 is ¾ No-load stability.  
specially designed for hand-held, battery-powered  
devices.  
¾
Standard SOT-89-3 package.  
Pin Configuration  
Applications  
¾
¾
¾
¾
¾
Active SCSI terminators.  
Top view  
Post regulators for switching supplies.  
Battery chargers.  
High-efficiency linear power supplies.  
2
3
1
Computer motherboard, display, graphic card  
DC/DC converter, such as 5V to 3.3V, 3.3V to  
2.8V or 3.3V to 2.5V.  
SOT-89  
Typical Application  
Ordering Information  
CYT6119 _ _ _  
3.3V  
Vin  
Vout  
M0  
5V  
C1  
C=10u  
R2  
rload  
C0  
C=10u  
PIN (1=>3): 1. G: OUT/GND/IN  
Control  
Logic  
2. N: GND/IN/OUT  
gnd  
gnd  
Over Current  
Protection  
Thermal  
Protection  
Package Type: 1. K: SOT-89-3L  
1.25V Ref  
gnd  
Output Voltage: 1. A: VOUT = 3.3V  
2. B: VOUT = 2.8V  
3. C: VOUT = 2.5V  
4. D: VOUT = 1.8V  
5. E: VOUT = 1.5V  
6. F: VOUT = 3.0V  
All contents are subject to change without prior notice.  
1
400mA Super LDO Linear  
Regulator  
CYT6119  
Absolute Maximum Ratings(1)  
Operating Ratings(2)  
Supply Input Voltage (VIN) ..………..……………….+6V  
Power Dissipation (PD) ………….. Internally Limited (3)  
Junction Temperature (TJ) ………................….. 150°C  
Lead Temperature (soldering, 5 sec.) ……....…. 260°C  
Storage Temperature (TS) ………….. -10°C to +150°C  
Supply Input Voltage (VIN) ……..…… +2.8V to +5.5V  
Junction Temperature (TJ) …….…….. 0°C to +125°C  
Package Thermal  
Resistance …………………………………… 180°C/W  
Electrical Characteristics  
VIN = VOUT + 1.0V; CIN = 2.2µF; COUT = 2.2µF, IOUT = 10mA; TJ = 25°C, unless otherwise specified.  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Units  
CYT6119-1.5V  
CYT6119-1.8V  
CYT6119-2.5V  
CYT6119-2.8V  
CYT6119-3.0V  
CYT6119-3.3V  
1.470  
1.764  
2.450  
2.744  
2.940  
3.234  
1.5  
1.8  
2.5  
2.8  
3.0  
3.3  
1.530  
1.836  
2.550  
2.856  
3.060  
3.366  
Output Voltage  
Accuracy  
VOUT  
V
Output Voltage  
Temperature Coefficient  
Line Regulation  
ppm/℃  
%
∆VOUT /∆T  
∆VOUT / VOUT  
∆VOUT / VOUT  
Note 4  
--  
50  
--  
VIN = VOUT + 1V to 5.5V  
IOUT =10mA to 250mA(5)  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
1
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
--  
1
Load Regulation (5)  
%
I
OUT =10mA to 400mA(5)  
1.5  
15  
IOUT =10mA  
IOUT =150mA  
175  
320  
600  
150  
20  
VIN - VOUT  
Dropout Voltage(6)  
mV  
IOUT =250mA  
I
OUT =400mA  
℃
℃
Thermal Protection Temperature  
Protection Hysterisys  
f =120Hz  
TPROTECTION  
PSRR  
IGROUND  
ILIMIT  
Thermal Protection  
Ripple Rejection  
Ground Current  
Current Limit  
51  
dB  
IOUT =10mA  
65  
uA  
IOUT =400mA  
110  
600  
VOUT =0V  
mA  
All contents are subject to change without prior notice.  
2
400mA Super LDO Linear  
Regulator  
CYT6119  
Note 1: Exceeding the absolute maximum rating may damage the device.  
Note 2: The device is not guaranteed to function outside its operating rating.  
Note 3: The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: PD(MAX) = (TJ(MAX)  
- TA)/θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the  
regulator will go into thermal shutdown. See Table 1 and the “Thermal Considerations” section for details.  
Note 4: Output voltage temperature coefficient is the worst-case voltage change divided by the total temperature range.  
Note 5: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for  
load regulation in the load range from 100µA to 400mA. Changes in output voltage due to heating effects are  
covered by the thermal regulation specification.  
Note 6: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its  
nominal value measured at 1V differential.  
All contents are subject to change without prior notice.  
3
400mA Super LDO Linear  
Regulator  
CYT6119  
Application Hints  
Thermal Consideration  
Like any Low dropout regulator,CYT6119 requires  
external capacitors to ensure stability. The external  
capacitors must be carefully selected to ensure the  
performances.  
It is important that the thermal limit of the package  
should not be exceeded. The CYT6119 has built-in  
thermal protection. When the thermal limit is  
exceeded, the IC will enter protection, and the VOUT  
will be reset to zero. The power dissipation for a  
given application can be calculated as follows:  
Input Capacitor:  
An Input Capacitor of at least 10uF is required.  
Ceramic or Tantalum can be used. The value can  
be increased without upper limit.  
The Power Dissipation (PD) is  
PD = IOUT * [VIN – VOUT  
]
The thermal limit of the package is then limited to  
D(MAX) = [TJ – TA]/θJA where TJ is the junction  
Output Capacitor:  
An Output Capacitor is required for look stability. It  
must be located no more than 1cm away from the  
P
temperature, TA is ambient temperature, and θJA is  
around 180°C/W for CYT6119. CYT6119 is designed  
to enter thermal protection at 150°C. For example, if  
TA is 25°C then the max PD is limited to about 0.7W.  
In other words, if IOUT(MAX) = 400mA, then [VIN –  
VOUT pin, and connected directly between VOUT and  
GND pins. The minimum value is 10uF but once  
again its value can be increased without limit.  
VOUT] can not exceed 1.75V.  
All contents are subject to change without prior notice.  
4
400mA Super LDO Linear  
Regulator  
CYT6119  
Typical Performance Characteristics  
(VIN = 5V, CIN = 1µF, COUT = 10µF, TA=25°C, unless otherwise noted.)  
Output Voltage vs Temperature  
Load Regulation  
3.5  
3
3.5  
3
1.5V  
1.8V  
2.5V  
3.3V  
1.5V  
1.8V  
2.5V  
3.3V  
2.5  
2
2.5  
2
1.5  
1
1.5  
1
0
50  
100  
150  
0
100  
200  
300  
400  
500  
600  
Temperature (C)  
Output Current (mA)  
Quiescent Current vs Temperature  
(Output Voltage @ 2.5V)  
Dropout Voltage vs Output Current  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
1.17  
1.16  
1.15  
1.14  
1.13  
1.12  
1.11  
1.1  
1.09  
1.08  
1.07  
1.06  
1.5V  
1.8V  
2.5V  
3.3V  
0
20  
40  
60  
80  
100  
120  
140  
0
100  
200  
300  
400  
500  
600  
Temperature (C)  
Output Current (mA)  
Line Transient  
Load Transient (10mA – 500mA)  
All contents are subject to change without prior notice.  
5
400mA Super LDO Linear  
Regulator  
CYT6119  
Outline Drawing for SOT-89  
DIMENSIONS  
INCHES  
MIN MAX  
MM  
DIMN  
MIN  
MAX  
0.173 0.181 4.400 4.600  
0.159 0.167 4.050 4.250  
0.067 0.075 1.700 1.900  
0.051 0.059 1.300 1.500  
0.094 0.102 2.400 2.600  
0.035 0.047 0.890 1.200  
A
B
C
D
E
F
G
H
I
SOT-89  
A
C
D
J
K
L
0.118REF  
0.059REF  
3.00REF  
1.50REF  
0.016 0.020 0.400 0.520  
0.055 0.063 1.400 1.600  
0.014 0.016 0.350 0.410  
J
K
L
G
H
I
10°TYP  
10°TYP  
0.028REF  
0.70REF  
M
All contents are subject to change without prior notice.  
6
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