LT1948EMS8 查看數據表（PDF） - Linear Technology
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LT1948EMS8 Datasheet PDF : 4 Pages
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LT1948
BLOCK DIAGRA
FB1
–
+
REF
28mV
–+
REF
VON
Q3
VO2
–
+
REF
VIN
VIN
–
+
GND
OSC
S
RQ
SW1
Q1
∑+
+
SLOPE 1
0.01Ω
8µA
CT
Q4
1.26V REFERENCE
REF
AND
UNDERVOLTAGE
LOCKOUT
3MHz
OSCILLATOR
OSC
SLOPE 1
SLOPE 2
REF
OSC
–
S
RQ
+
∑+
+
SLOPE 2
SW2
Q2
0.03Ω
1948BD
RELATED PARTS
PART NUMBER
LT1949
LT1317
LT1308B
LT1615
LT1930
DESCRIPTION
600kHz, 1A Switch PWM DC/DC Converter
2-Cell Micropower DC/DC with Low-Battery Detect
600kHz Single Cell Step-Up Regulator
Micropower Step-Up Regulator in SOT-23
1.2MHz, Step-Up Regulator in SOT-23
4
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX:(408)434-0507 q www.linear-tech.com
COMMENTS
10V at 175mA from 3.3V Input
3.3V at 200mA from 2-Cell Input
5V at 1A from a 1-Cell Li-Ion Battery
20V at 12mA from 2.5V Input, 5-Lead SOT-23 Package
5V at 480mA from 3.3V, 5-Lead SOT-23 Package
1948i LT/TP 0800 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2000
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