16
LT1573
sn1573 1573fas
LT/TP 1299 2K REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1997
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
(408) 432-1900
FAX: (408) 434-0507
●
TELEX: 499-3977
●
www.linear-tech.com
High Efficiency 2.5V to 1.8V Converter at 5A Output Current
COMP
V
OUT
FB
LATCH
LT1573
+
C
TIME
0.5µF
C
OUT
V
IN2
3V
TO 7V
V
IN1
2.5V
V
OUT
1.8V
R
D
6.2Ω
1/2W
GND
1573 TA06
R
B
200Ω
1/8W
R1
420Ω
1/8W
R2
1k
1/8W
LOAD
MOTOROLA
D45H11
C
IN1
, C
OUT
= AVX 100µF/10V SURFACE MOUNT TANTALUM CAPACITOR
C
IN2
= AVX 15µF/10V SURFACE MOUNT TANTALUM CAPACITOR
C
TIME
= 0.5µF FOR 100ms TIME OUT AT ROOM TEMPERATURE
SHDN (ACTIVE HIGH) PIN SHOULD BE TIED TO GROUND IF IT IS NOT USED
C
IN2
V
IN
DRIVE
SHDN
GND
+ +
C
IN1
+
Dimensions in inches (millimeters) unless otherwise noted.
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
PART NUMBER DESCRIPTION COMMENTS
LT1529 3A Micropower Low Dropout Regulator 50µA Quiescent Current, 0.5V Dropout, Shutdown
LT1575/LT1577 Low Dropout N-Channel MOSFET Regulator Driver Ultrafast Transient, Adjustable/Fixed Output, Current Limiting
LT1580/LT1581 7A, 10A Very Low Dropout Linear Regulators For High Current 3.3V to 2.xV Applications
LT1584/LT1585/LT1587 7A/4.6A/3A Low Dropout, Fast Response Regulators For High Performance Microprocessors
LT1761/LT1762/LT1763 Low Noise LDO Micropower Regulators 20µA to 30µA Quiescent Current, 20µV
RMS
Noise
LT1764 3A Fast Transient Response Low Dropout Regulator 340mV Dropout Voltage
RELATED PARTS
0.016 – 0.050
(0.406 – 1.270)
0.010 – 0.020
(0.254 – 0.508)
× 45°
0°– 8° TYP
0.008 – 0.010
(0.203 – 0.254)
SO8 1298
0.053 – 0.069
(1.346 – 1.752)
0.014 – 0.019
(0.355 – 0.483)
TYP
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
BSC
1
2
3
4
0.150 – 0.157**
(3.810 – 3.988)
8
7
6
5
0.189 – 0.197*
(4.801 – 5.004)
0.228 – 0.244
(5.791 – 6.197)
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
*
**
TYPICAL APPLICATIO S
U
U
PACKAGE DESCRIPTIO
