Datasheet

LT1173
14
U
SA
O
PP
L
IC
AT
ITY
P
I
CA
L
“5 to 5” Step-Up or Step-Down Converter
2V to 5V at 300mA Step-Up Converter with Under Voltage Lockout
LIM
I
FB
GND
LT1173
+
56Ω
470µF
L1*
100µH
+5V
OUTPUT
LT1173 • TA23
470k 75k
240Ω
24k
+
470µF
1N5818
SI9405DY
4 X NICAD
OR
ALKALINE
CELLS
5
7
SET AO
4
8
6
3
21
*L1 = COILTRONICS CTX100-4
GOWANDA GA20-103K
+
470µF
IN
V
SW2
SW1
V
OUT
= 5V AT 100mA
V
IN
= 2.6V TO 7.2V
LIM
I
FB
GND
LT1173
100k
L1*
20µH, 5A
+5V OUTPUT
300mA
LOCKOUT AT
1.85V INPUT
LT1173 • TA24
5Ω
47Ω
100µF
OS-CON
2 X NICAD
SET
AO
*L1 = COILTRONICS CTX-20-5-52
100
100k
2.2M
47k
100k 100k
†
301k
†
220
MJE200
1N5820
+
IN
V
SW2
SW1 2N4403
2N3906
†
1% METAL FILM