LTC3402_15 Datasheet, PDF (16/16 Pages) Linear Technology – 2A, 3MHz Micropower Synchronous Boost Converter

LTC3402
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 2.2μH
R3
1M
+
2
CELLS
C1
4.7μF
LTC3402
3
4
V_IN
SW
10
SHDN
7
V_OUT
2
8
MODE/SYNC FB
6
PGOOD
1
R_t
9
V_C
GND ⁵
R_t
30.1k
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 CD43-2R2M
D1
V_OUT
3.3V
500mA
R2
909k
C3
470pF
R5
82k
R1
549k
C4
4.7pF
C2
22μF
3402 TA08
D6
4.7μF
D7
–2.5V
1mA
RELATED PARTS
PART NUMBER
LT^®1306
LT1308A/LT1308B
LT1613
LT1615
LT1619
LTC1872
LT1930/LT1930A
LT1949
LTC3400
LTC3401
LTC3424
DESCRIPTION
Sync, Fixed Frequency, Step-Up DC/DC Converter
High Current, Micropower, Single Cell 600kHz DC/DC Converter
1.4MHz, Single Cell DC/DC Converter in SOT-23
Micropower Step-Up DC/DC Converter in SOT-23
High Efficiency Boost DC/DC Controller
SOT-23 Boost DC/DC Controller
1.2MHz/2.2MHz DC/DC Converters in SOT-23
600kHz, 1A Switch PWM DC/DC Converter
Single Cell, High Current (600mA), Micropower,
Synchronous 1.2MHz Step-Up DC/DC Converter
Single Cell, High Current (1A), Micropower,
Synchronous 3MHz Step-Up DC/DC Converter
Single Cell, High Current (2A), Micropower,
Synchronous 3MHz Step-Up DC/DC Converter
COMMENTS
Internal 2A Switches; V_IN As Low As 1.8V
5V at 1A with Single Li-Ion Cell, V_OUT to 34V
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
550kHz, 2.5V to 9.8V Input
V_IN = 2.6V to 16V, 5V at 450mA from 3.3V Input
1A, 0.5Ω, 30V Internal Switch, V_IN As Low As 1.5V,
Low-Battery Detect Active in Shutdown
V_IN = 0.85V to 5.5V, Up to 92% Efficiency Synchronizable
Oscillator from 100kHz to 1.2MHz, ThinSOT Package
V_IN = 0.5V to 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, 10-Lead MSOP Package
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3402fb
LT 0607 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2000