16
LT1123
1123fb
© LINEAR TECHNOLOGY CORPORATION 1992
LT/LWI/LT 0505 REV B • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
TYPICAL APPLICATIO S
U
5V/1A Regulator with Shutdown 5V Regulator Powered by Multiple Battery Packs*
5V/1A OUTPUT
LT1123 TA10
620Ω
1M
6V
GEL CELL
10µF
ALUM
Si9400DY*
HI = ON
LO = OFF
1/6
MM74C906
(OPEN COLLECTOR
OUTPUT)
68Ω
*P-CHANNEL, LOGIC LEVEL
DRIVE
LT1123
GND
FB
+
5-CELL NiCd
BATTERY PACK
(6V)
R1
1.5k
R2
820Ω
5V/1A
OUTPUT
MJE1123MJE1123MJE1123
10µF
10V
10µF
10V
LT1123 TA06
*PACKS WILL SHARE CURRENT
DRIVE
LT1123
GND
FB
+
10µF
10V
R5
1.5k
R3
1.5k
R6
820Ω
R4
820Ω
+
10µF
10V
+
+
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LT1083/4/5 7.5A, 5A, 3A Low Dropout Positive Regulators 1.5V Dropout Voltage, 0.1% Load Regulator, 1.25V
REF
LT1117 800mA Low Dropout Regulator SOT-223 Package, 0.4% Load Regulator
LT1121 150mA, Low Dropout LDO 0.4V Dropout Voltage, I
Q
= 30µA
LT1761 100mA, Low Noise LDO 300mV Dropout Voltage, I
Q
= 20µA
LT1763 1.5A, Low Noise, Fast Transient Response LDO Optimized for Hot Response
