LTC1174_15 Datasheet, PDF (20/20 Pages) Linear Technology – High Efficiency Step-Down and Inverting DC/DC Converter

LTC1174
LTC1174-3.3/LTC1174-5
TYPICAL APPLICATIO
Battery Charger
* AVX TAJD226K020
** AVX TAJD107K010
D1,D2 = MBRS140T3
(SURFACE MOUNT)
1N5818
† _{L1 SELECTION}
MANUFACTURER PART NO.
COILTRONICS
COILCRAFT
SUMIDA
GOWANDA
CTX50-2P
DT3316-473
CD54-470
GA10-472K
V_IN(V) I_{OUT MAX}(mA)
8
320
9
325
10
330
11
335
12
335
TYPE
SURFACE MOUNT
SURFACE MOUNT
SURFACE MOUNT
THROUGH HOLE
INPUT VOLTAGE
8V TO 12.5V
7 _IPGM
6
V_IN
8
SHUTDOWN
3 _LBIN
2
LTC1174
LB_OUT
GND
1
V_FB
SW ⁵
4
+
0.1µF
22µF*
20V
×2
L1^†
50µH
D1
150k
33k
D2
V_OUT TO
4 NiCAD BATTERY
+
100µF**
10V
1174 TA15
RELATED PARTS
PART NUMBER
LT^®1074/LT1076
LTC1147
LTC1265
LT1375/LT1376
LTC1574
LT1611
LTC1701
LTC1707
DESCRIPTION
Step-Down Switching Regulator
High Efficiency Step-Down DC/DC Controller
1.2A High Efficiency Step-Down DC/DC Regulator
1.5A 500kHz Step-Down Switching Regulator
High Efficiency Step-Down DC/DC Regulator
Inverting 1.4MHz Switching Regulator in SOT-23
1MHz Step-Down DC/DC Converter in SOT-23
High Efficiency Synchronous Step-Down Regulator
LTC1877
High Efficiency Synchronous Step-Down Regulator
COMMENTS
100kHz, 5A (LT1074) or 2A (LT1076) Monolithic
8-Pin Controller
Burst Mode Operation, Monolithic
High Frequency Small Inductor
LTC1174 with Internal Schottky Diode
– 5V at 150mA from 5V Input, 1mV_P-P Output Ripple, SOT-23 Package
V_IN = 2.5V to 5.5V, I_Q = 135µA, V_OUT = 5V to 1.25V
V_IN = 2.85 to 8.5V, Selectable Burst Mode Operation,
600mA Output Current, SO-8 Package
600mA at V_IN = 5V, 2.65V to 10V = V_IN, I_Q = 10µA
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
1174fe
LT 1006 REV E • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1994