LTC1433_15 Datasheet, PDF (20/20 Pages) Linear Technology – 450mA, Low Noise Current Mode Step-Down DC/DC Converters

LTC1433/LTC1434
TYPICAL APPLICATIO
5V to ±5V Outputs
I_OUT(MAX) = 130mA
I_OUT(MIN) = 10mA
V_OUT = 5V
I_OUT(MAX) = 130mA
I_OUT(MIN) = 5mA
V_OUT = – 5V
100µF* ⁺
10V
+
100µF*
10V
2
D1
L1A
L1B
20µH_•
4.7µF** _• ^20µH
1
3
4
D2
0.01µF
1
SSW
2
NC
16
PWRV_IN
15
PGND
3
14
BSW
SV_IN
4
LTC1433
13
NC
C_OSC
5
12
SGND
POR
6
RUN/SS
7
LBO
8
LBI
11
I_TH
10
V_OSENSE
9
V_PROG
D1: MOTOROLA MBRS130LT3 *AVX TPSD107M010R0100
L1A, L1B:
** WIMA MKS2
MANUFACTURER
COILTRONICS
DALE
PART NO.
CTX20-4
LPT4545-200LA
+ _100µF*
10V
50pF
100k
POWER-ON
RESET
5.1k
680pF
6800pF
L1B
L1A
32
TOP VIEW
4 1^•
L1B
L1A
1433/34 TA06
V_IN
5V
0.1µF
RELATED PARTS
PART NUMBER
LT^®1074/LT1076
LTC1174/LTC1174-3.3/
LTC1174-5
LTC1265
LT1375/LT1376
DESCRIPTION
Step-Down Switching Regulators
High Efficiency Step-Down and Inverting DC/DC Converters
1.2A High Efficiency Step-Down DC/DC Converter
1.5A, 500kHz Step-Down Switching Regulators
LTC1474
High Efficiency Step-Down Converter
LTC1435
High Efficiency Synchronous Step-Down Controller
LTC1436/LTC1436-PLL High Efficiency Low Noise Synchronous Step-Down Controllers
LTC1438/LTC1439
Dual High Efficiency Low Noise Synchronous Step-Down Controllers
LTC1538-AUX
Dual High Efficiency Synchronous Step-Down Controller
LTC1539
Dual High Efficiency Low Noise Synchronous Step-Down Controller
LTC1627
High Efficiency Monolithic Synchronous DC/DC Converter
Burst Mode is a trademark of Linear Technology Corporation.
COMMENTS
100kHz, 5A (LT1074) or 2A (LT1076) Internal Switch
Burst Mode^TM Operation
Burst Mode Operation
High Frequency, Small Inductor, High Efficiency
Switchers, 1.5A Switch
Low I_Q = 10µA, 8-Pin MSOP
16-Pin Narrow SO and SSOP
24-Pin Narrow and 28-Pin SSOP
Up to Four Outputs Capability
Auxiliary Linear Regulator 5V Standby in Shutdown
Auxiliary Linear Regulator 5V Standby in Shutdown
Low Supply Voltage: 2.65V to 10V, 0.5A
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^qFAX:[phone] ^q www.linear-tech.com
14334fa LT/TP 1298 2K REV A • PRINTED IN THE USA
© LINEAR TECHNOLOGY CORPORATION 1996