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LD2979Z32AP [STMICROELECTRONICS]

3.2V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, PBCY3, TO-92, 3 PIN;
LD2979Z32AP
型号： LD2979Z32AP
厂家： ST    ST
描述：

3.2V FIXED POSITIVE LDO REGULATOR, 0.6V DROPOUT, PBCY3, TO-92, 3 PIN

稳压器
文件： 总9页 (文件大小：89K)
中文：  中文翻译
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LD2979  
SERIES  
VERY LOW DROP  
VOLTAGE REGULATORS WITH INHIBIT  
■
■
VERY LOW DROPOUT VOLTAGE  
(0.2VTYP. AT 50mA LOAD)  
VERY LOW QUIESCENT CURRENT  
(TYP. 500µA AT50mALOAD)  
■
■
OUTPUT CURRENT UP TO 50 mA  
LOGIC-CONTROLLEDELECTRONIC  
SHUTDOWN  
SOT23-5L  
■
OUTPUT VOLTAGESOF 2.85;3.0; 3.2;3.3;  
3.8; 5.0V  
■
■
■
■
■
■
INTERNAL CURRENT AND THERMAL LIMIT  
SUPPLY VOLTAGEREJECTION: 63dB(TYP)  
ONLY1µF FOR STABILITY  
SELECTION AT 25 oC  
TEMPERATURE RANGE: -25 TO 125 oC  
PACKAGE AVAILABLE:SOT23-5L AND TO-92  
DESCRIPTION  
TO-92  
The LD2979 series are very Low Drop regulators  
available in SOT23-5L and TO-92.  
The very low drop-voltage and the very low  
quiescent current make them particularly suitable  
for low noise, low power applications and in  
battery powered systems.  
that when the device is used as local regulator, it  
is possible to put a part of the board in standby,  
decreasingthe total power consumption.  
Shutdown Logic Control function is available on  
five pin version (TTL compatible). This means  
SCHEMATIC DIAGRAM  
1/9  
April 2000  
LD2979  
ABSOLUTE MAXIMUM RATING  
Symbol  
Parameter  
Value  
16  
Unit  
V
VIN  
VINH  
Io  
DC InputVoltage  
DC Inhibit Input Voltage  
Output Current  
VIN  
V
Internally limited  
Internally limited  
- 40 to 150  
- 25 to 125  
mA  
mW  
oC  
oC  
Ptot  
Tstg  
Top  
Power Dissipation  
Storage Temperature Range  
Operating Junction Temperature Range  
CONNECTION DIAGRAM  
(top view)  
BOTTOM  
VIEW  
SOT23-5L  
TO-92  
SYMBOL  
NAME AND FUNCTION  
PIN NUMBER  
SOT23-5L  
TO-92  
VIN  
GND  
INHIBIT  
NC  
Input Voltage  
Ground  
1
2
3
4
5
3
2
-
Control Switch ON/OFF (*)  
Not to be connected  
Output Voltage  
-
VOUT  
1
(*) Only for the version in SOT23-5L package: Inhibit pin is not internally pulled-up then it must not be left floating. Connect to a positive  
voltage higher than 2V to able the device.  
ORDERING NUMBERS  
SOT23-5L  
TO-92  
Output Voltage  
LD2979M28  
LD2979M30  
LD2979M32  
LD2979M33  
LD2979M38  
LD2979M50  
LD2979Z28  
LD2979Z30  
LD2979Z32  
LD2979Z33  
LD2979Z38  
LD2979Z50  
2.85 V  
3.0 V  
3.2 V  
3.3 V  
3.8 V  
5.0 V  
2/9  
LD2979  
ELECTRICAL CHARACTERISTICS FOR LD2979 (refer to the test circuits, Ta = 25 oC,  
VIN = VO(NOM) +1, CO = 1 µF, IO = 1mA, Vinh = 2V(*)) (unless otherwise specified)  
Symbol  
Parameter  
Test Conditions  
Min.  
Typ.  
Max.  
Unit  
Vo  
Output Voltage  
VIN = 3.85 V  
2.793  
2.736  
2.85  
2.907  
2.964  
V
V
1 < Io < 50 mA, -25 < Ta < 125 oC  
Vo  
Vo  
Vo  
Vo  
Vo  
Iout  
Output Voltage  
Output Voltage  
Output Voltage  
Output Voltage  
Output Voltage  
VIN = 4 V  
2.940  
2.880  
3
3.060  
3.120  
V
V
1 < Io < 50 mA, -25 < Ta < 125 oC  
VIN = 4.2V  
3.136  
3.072  
3.2  
3.3  
3.8  
5
3.264  
3.328  
V
V
1 < Io < 50 mA, -25 < Ta < 125 oC  
VIN = 4.3V  
3.234  
3.168  
3.366  
3.432  
V
V
1 < Io < 50 mA, -25 < Ta < 125 oC  
VIN = 4.8V  
3.724  
3.648  
3.876  
3.952  
V
V
1 < Io < 50 mA, -25 < Ta < 125 oC  
VIN = 6 V  
4.9  
4.8  
5.1  
5.2  
V
V
1 < Io < 50 mA, -25 < Ta < 125 oC  
Output Current Limit  
LineRegulation  
100  
mA  
V
VO(NOM) +1 < VIN < 16V, Io = 1 mA  
-25 < Ta < 125 oC  
0.028  
0.064  
%/Vin  
∆
o
Id  
Quiescent Current  
ON MODE  
Io = 0 mA  
80  
110  
170  
700  
A
A
A
A
µ
µ
µ
µ
Io = 0 mA  
Io = 50 mA  
Io = 50 mA  
-25 < Ta < 125 oC  
-25< Ta < 125 oC  
500  
1300  
OFF MODE(*)  
Vihn < 0.18 V  
0
µA  
Vihn < 0.18 V -25< Ta < 125 oC  
1
A
µ
SVR Supply Voltage Rejection  
Io = 50 mA, f = 120 Hz, Cout = 10 µF  
63  
6
dB  
Vd  
Dropout Voltage  
Io = 0 mA  
12  
18  
60  
mV  
mV  
mV  
mV  
mV  
mV  
mV  
mV  
Io = 0 mA  
Io = 1 mA  
Io = 1 mA  
Io = 10 mA  
Io = 10 mA  
Io = 50 mA  
Io = 50 mA  
-25 < Ta < 125 oC  
-25 < Ta < 125 oC  
-25< Ta < 125 oC  
-25< Ta < 125 oC  
30  
90  
100  
200  
200  
300  
400  
600  
Vil  
Vih  
Ii  
Control Input Logic Low  
Control Input Logic High  
Control Input Current  
-25 < Ta < 125 oC (*)  
-25 < Ta < 125 oC (*)  
Vinhibit = 0 V (*)  
Vinhibit = 5 V,  
BW = 300 Hz to 50 KHz, Cout = 10 F  
Device Off  
Device On  
0.18  
V
V
2
0
5
-1  
15  
A
A
µ
µ
-25< Ta < 125 oC (*)  
eN  
Output Noise Voltage (RMS)  
160  
V
µ
µ
(*) Note: Only for types in SOT23-5L  
3/9  
LD2979  
o
TYPICAL PERFORMANCE CHARACTERISTICS  
(unless otherwise specified Ta=25 C)  
Output Voltage vs Temperature  
Output Voltage vs Input Voltage  
Dropout Voltage vs Output Current  
QuiescentCurrent vs Temperature  
Output Voltage vs Input Voltage  
Dropout Voltage vs Temperature  
4/9  
LD2979  
TYPICAL PERFORMANCE CHARACTERISTICS  
(continued)  
S.V.R. vs Frequency  
Short Circuit Current vs Dropout Voltgae  
Inhibit Current vs Temperature  
Inhibit Voltage vs Temperature  
Load Transient Response  
Load Transient Response  
Vout  
Vout  
Vout  
20mV/ DIV  
20mV/ DIV  
Vout  
Iout  
Iout  
Iout  
20mA/ DIV  
Iout  
20mA/ DIV  
Vin: 5V, Iout: 50mA to 1mA, Time : 10us/DIV  
Vin: 5V, Iout: 1mA to 50mA, Time : 10us/DIV  
CO = 10µF (ESR=1Ω at 1KHz)  
CO = 10µF (ESR=1Ω at 1KHz)  
5/9  
LD2979  
TYPICAL PERFORMANCE CHARACTERISTICS  
(continued)  
Line Transient Response  
Vout  
Vin  
Vin : 200mV/DIV, Vout: 5mV/DIV, Time : 20us/DIV  
VCC = 4.75 to 5.25V, IOUT = 0.1A, CO = 10µF (ESR=1Ω at 1KHz)  
6/9  
LD2979  
7/9  
LD2979  
TO-92 MECHANICAL DATA  
mm  
inch  
TYP.  
DIM.  
MIN.  
4.58  
4.45  
3.2  
TYP.  
MAX.  
5.33  
5.2  
MIN.  
0.180  
0.175  
0.126  
0.500  
MAX.  
0.210  
0.204  
0.165  
A
B
C
D
E
F
4.2  
12.7  
1.27  
0.050  
0.4  
0.51  
0.016  
0.14  
0.020  
G
0.35  
8/9  
LD2979  
Information furnished isbelieved to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences  
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is  
granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are  
subject to change without notice. Thispublication supersedes and replaces all information previously supplied. STMicroelectronics products  
are not authorized for use as critical components in lifesupport devices or systems withoutexpress written approval of STMicroelectronics.  
The ST logo is a registered trademark of STMicroelectronics  
2000 STMicroelectronics – Printed in Italy – All Rights Reserved  
STMicroelectronics GROUP OF COMPANIES  
Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan- Malaysia - Malta - Morocco  
Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A.  
http://www.st.com  
.
9/9  

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