LTC3401 Datasheet, PDF (16/16 Pages) Linear Technology – 1A, 3MHz Micropower Synchronous Boost Converter

LTC3401
TYPICAL APPLICATIO
Triple Output Converter
D2
D3
D4
D5
0.1µF
0.1µF
0.1µF
8V
2mA
4.7µF
V_IN =1.8V TO 3V
L1, 4.7µH
R3
1M
+
2
CELLS
C1
4.7µF
LTC3401
3
4
V_IN
SW
10
SHDN
7
V_OUT
2
8
MODE/SYNC FB
6
PGOOD
1
R_t
9
V_C
5
GND
R_t
30k
0 = FIXED FREQ
1 = Burst Mode OPERATION
0.1µF
C1: TAIYO YUDEN JMK212BJ475MG
C2: TAIYO YUDEN JMK325BJ226MM
D1: ON SEMICONDUCTOR MBRM120T3
D2 TO D7: ZETEX FMND7000 DUAL DIODE
L1: SUMIDA CD43-4R7M
D1
R2
909k
C3
470pF
R5
82k
R1
549k
C4
4.7pF
V_OUT
3.3V
500mA
C2
22µF
D6
4.7µF
D7
–2.5V
1mA
3401 TA09
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ThinSOT is a trademark of Linear Technology Corporation.
COMMENTS
Internal 2A Switches, V_IN As Low As 1.8V
5V at 1A from Single Li-Ion Cell
V_IN As Low As 1.5V, I_Q = 100µA
3V at 30mA from 1V, 5V at 200mA from 3.3V
V_IN As Low As 1.1V, 3V at 30mA from Single Cell
I_Q = 20µA, 1µA Shutdown Current, V_IN As Low As 1V
1A Gate Drive, 1.1V to 20V Input, Separate V_CC for Gate Drive
V_IN = 2.6V to 16V, 5V at 450mA from 3.3V Input
1.1A, 0.5Ω/30V Internal Switch, V_IN As Low As 1.8V
V_IN = 0.85V to 5.5V, Up to 92% Efficiency Synchronizable
Oscillator from 100kHz to 1.2MHz, ThinSOT^TM Package
V_IN = 0.5V to 5.5V, Up to 97% Efficiency Synchronizable
Oscillator from 100kHz to 3MHz, 10-Lead MSOP Package
V_OUT = 1.5V, Up to 97% Efficiency Synchronizable
Oscillator from 100kHz to 3MHz
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^q FAX: [phone] ^q www.linear.com
3401fa
LT/TP 0502 1.5K REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2001