ST1L04PT [STMICROELECTRONICS]

LOW QUIESCENT CURRENT VOLTAGE REGULATOR; 低静态电流稳压器
ST1L04PT
型号: ST1L04PT
厂家: ST    ST
描述:

LOW QUIESCENT CURRENT VOLTAGE REGULATOR
低静态电流稳压器

线性稳压器IC 调节器 电源电路 输出元件
文件: 总11页 (文件大小:559K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
ST1L04  
LOW QUIESCENT CURRENT VOLTAGE REGULATOR  
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I
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ADJUSTABLE OUTPUT VOLTAGE FROM  
0.8V to V -V  
I
d
INTERNAL REFERENCE VOLTAGE  
ACCURACY ± 2% AT 25°C  
OUTPUT CURRENT CAPABILITY: 1A  
MINIMUM  
VERY LOW QUIESCENT CURRENT: MAX  
3mA OVER TEMPERATURE RANGE  
PPAK  
I
I
MAXIMUM DROPOUT 1V (@ I =1A)  
STABLE ONLY WITH LOW ESR CERAMIC  
CAPACITORS  
O
I
THERMAL SHUTDOWN PROTECTION  
WITH HYSTERESIS  
OVER CURRENT PROTECTION  
OPERATING JUNCTION TEMPERATURE  
RANGE: FROM 0 TO 125°C  
junction temperature range. The ST1L04 is stable  
only with low ESR output ceramic capacitors.  
Internal protection circuitry includes thermal  
protection with hysteresis and over current  
limiting.  
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The ST1L04 is especially suitable for applications  
requiring low voltage outputs from low voltage  
inputs. Typical application for this product are,  
notebook PCs, low voltage ASIC, VID power  
supplies and low cost post regulation for 3.3V  
output voltage switching regulators.  
DESCRIPTION  
The ST1L04 is a low drop adjustable linear  
voltage regulator capable to supply up to 1A  
output current.  
The output voltage can be as low as 0.8V. The  
quiescent current is well controlled and  
maintained below 3mA over the whole allowed  
Figure 1: Schematic Diagram  
Rev. 1  
1/11  
February 2005  
ST1L04  
Table 1: Order Codes  
TYPE  
PPAK  
ST1L04PT  
ST1L04  
Figure 2: Pin Connection (top view)  
Table 2: Pin Description  
PIN N°  
NAME  
FUNCTION  
1
V
Supply voltage input pin. Bypass with a ceramic capacitor to GND  
I
2
3
4
5
N.C.  
GND  
ADJ  
Not connected.  
Ground. The exposed metallic pad of the package is connected to GND.  
Adjust voltage pin. External resistor divider connection.  
Output voltage pin. Bypass with a ceramic capacitor to GND  
V
O
Table 3: Absolute Maximum Ratings  
Symbol  
Parameter  
Value  
Unit  
V
DC Supply Voltage  
from GND-0.3 to 10  
internally limited  
internally limited  
0 to +125  
V
W
A
I
P
Power Dissipation  
tot  
I
Output Current  
O
T
Operating Junction Temperature Range  
Storage Temperature Range  
°C  
°C  
op  
T
-40 to +150  
stg  
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is  
not implied.  
Table 4: Thermal Data  
Symbol  
Parameter  
PPAK  
Unit  
R
Thermal Resistance Junction-case  
Thermal Resistance Junction-ambient  
8
°C/W  
°C/W  
thj-case  
R
100  
thj-amb  
2/11  
ST1L04  
Figure 3: Typical Application Schematic  
NOTE: The adjustable output voltage is set by a resistor divider connected between V and GND with its centre tap connected to ADJ. The  
O
voltage divider resistor are: R1 connected between V and ADJ and R2 connected between ADJ and GND. V is determined by V , R1,  
O
O
REF  
R2, I , as follows:  
ADJ  
V =V  
(1+R1/R2)+I  
R1  
ADJ  
O
REF  
Since I  
is very small and stable it can be ignored and the output voltage can be simply calculated as follows:  
ADJ  
V =V  
(1+R1/R2)  
REF  
O
Table 5: Electrical Characteristics (refer to the typical application schematic, V =from 2.9 to 5.5V, I =  
IN  
O
from 10mA to 1A, C =4.7µF, C  
=4.7µF, T =0 to 125°C, unless otherwise specified). Typical values  
j
IN  
OUT  
are intended at T =25°C unless otherwise specified  
j
Symbol  
Parameter  
Operating Input Voltage  
Quiescent Current  
Test Conditions  
Min.  
Typ.  
Max.  
Unit  
V
V
2.8  
I
I
3
mA  
V
d
V
Reference Voltage  
T = 25°C  
0.784  
0.776  
0.8  
0.8  
0.816  
0.824  
0.8  
REF  
J
V  
Line Regulation  
I
= 10mA  
O
%
%
O
V  
Load Regulation  
V = 3.3V  
0.8  
1
O
I
I
Adjustment Current  
Adjustment Current change  
I
= 10mA  
µA  
nA  
µA  
ADJ  
O
I
200  
100  
ADJ  
I
Minimum Output Current for  
regulation  
Omin  
I
Output Current Limit  
1
1.4  
1
A
V
O
V
Dropout Voltage  
I
= 1A, V = from 1.8 to 3.3V  
O
d
O
(see note 1 and note 2)  
SVR  
Supply Voltage Rejection  
(see note 2)  
V = 3.3±0.5V,  
f=120Hz  
50  
20  
dB  
I
I =10mA,  
f=100kHz  
O
T = 25°C  
J
C
Ceramic Output capacitor value  
Output Capacitor ESR value  
2.2  
µF  
O
C
200  
mΩ  
ESR  
eN  
Output Noise Voltage (see note 2) B = from 10Hz to 10kHz,  
V = 3.3V, I =10mA, T =25°C  
0.003  
%V  
O
I
O
j
T
Thermal shutdown trip point  
(see note 2)  
V =3.3V  
165  
5
°C  
°C  
SH  
HY  
I
T
Thermal Shutdown hysteresis  
(see note 2)  
V =3.3V  
I
NOTE 1: This parameter is the minimum input to output differential voltage required to maintain 1% regulation with respect to the V nominal  
O
value. For V between 0.8V and 1.8V included, the V value is overridden by the minimum operating input voltage.  
O
d
NOTE 2: Guaranteed by design. Not tested in production.  
3/11  
ST1L04  
TYPICAL CHARACTERISTICS  
Figure 4: Output Voltage vs Temperature  
Figure 7: Load Regulation vs Temperature  
Figure 8: Quiescent Current vs Temperature  
Figure 9: Quiescent Current vs Temperature  
Figure 5: Output Voltage vs Temperature  
Figure 6: Line Regulation vs Temperature  
4/11  
ST1L04  
Figure 10: Quiescent Current vs Output Current  
Figure 11: Quiescent Current vs Input Voltage  
Figure 12: Dropout Voltage vs Temperature  
Figure 13: Dropout Voltage vs Output Current  
Figure 14: Supply Ripple Rejection vs  
Temperature  
Figure 15: Supply Ripple Rejection vs  
Temperature  
5/11  
ST1L04  
Figure 16: Supply Ripple Rejection vs Output  
Figure 19: Adjustment Current change vs  
Current  
Temperature  
Figure 17: Supply Ripple Rejection vs  
Figure 20: Minimum Output Current for  
Frequency  
Regulation vs Temperature  
Figure 18: Adjustment Current vs Temperature  
Figure 21: Minimum Output Current for  
Regulation vs Temperature  
6/11  
ST1L04  
Figure 22: Load Transient  
Figure 23: Line Transient  
V =4V, I =10mA to 1A, C =4.7µF, C =4.7µF, T =25°C  
V =3V to 5V, I =250mA, NO C , T =25°C, t =t =3µs  
RISE FALL  
I
O
O
I
J
I
O
I
J
7/11  
ST1L04  
PPAK MECHANICAL DATA  
mm.  
inch  
TYP.  
DIM.  
MIN.  
TYP  
MAX.  
MIN.  
MAX.  
A
A1  
A2  
B
2.2  
0.9  
0.03  
0.4  
5.2  
0.45  
0.48  
6
2.4  
1.1  
0.23  
0.6  
5.4  
0.6  
0.6  
6.2  
0.086  
0.035  
0.001  
0.015  
0.204  
0.017  
0.019  
0.236  
0.094  
0.043  
0.009  
0.023  
0.212  
0.023  
0.023  
0.244  
B2  
C
C2  
D
D1  
E
5.1  
0.201  
6.4  
6.6  
0.252  
0.260  
E1  
e
4.7  
0.185  
0.050  
1.27  
G
4.9  
5.25  
2.7  
10.1  
1
0.193  
0.093  
0.368  
0.206  
0.106  
0.397  
0.039  
0.039  
G1  
H
2.38  
9.35  
L2  
L4  
L5  
L6  
0.8  
2.8  
0.031  
0.110  
0.6  
1
1
0.023  
0.039  
0078180-E  
8/11  
ST1L04  
Tape & Reel DPAK-PPAK MECHANICAL DATA  
mm.  
TYP  
inch  
TYP.  
DIM.  
MIN.  
MAX.  
330  
MIN.  
MAX.  
12.992  
0.519  
A
C
12.8  
20.2  
60  
13.0  
13.2  
0.504  
0.795  
2.362  
0.512  
D
N
T
22.4  
7.00  
10.60  
2.75  
4.1  
0.882  
0.2.76  
0.417  
0.105  
0.161  
0.319  
Ao  
Bo  
Ko  
Po  
P
6.80  
10.40  
2.55  
3.9  
6.90  
10.50  
2.65  
4.0  
0.268  
0.409  
0.100  
0.153  
0.311  
0.272  
0.413  
0.104  
0.157  
0.315  
7.9  
8.0  
8.1  
9/11  
ST1L04  
Table 6: Revision History  
Date  
Revision  
Description of Changes  
10-Feb-2005  
1
First Release.  
10/11  
ST1L04  
Information furnished is believed 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. Specifications mentioned in this publication are subject  
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not  
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.  
The ST logo is a registered trademark of STMicroelectronics  
All other names are the property of their respective owners  
© 2005 STMicroelectronics - All Rights Reserved  
STMicroelectronics group of companies  
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -  
Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America  
www.st.com  
11/11  

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