LTC3520IUF-TRPBF データシートの表示（PDF） - Linear Technology
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LTC3520IUF-TRPBF Datasheet PDF : 24 Pages
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LTC3520
TYPICAL APPLICATION
Li-Ion to 3.3V at 500mA and 1.8V at 600mA
with Low Battery Detection
VIN
2.2V TO 4.2V
VOUT
1.8V
600mA
Li-Ion
255k
C2
22μF
200k
BURST PWM
C1
22μF
L2
3.3μH
27pF
3.3nF
54.9k
301k
PVIN1 PVIN2 PVIN3 SVIN SW1A
SW1B
SW2
VOUT1
VC1
FB2
SS2
RT
PWM1
PWM2
LTC3520
FB1
SS1
AIN
AOUT
L1
4.7μH
470pF
56pF
15k 10k
3.3nF
BAT_LOW
1M
309k
C1, C2, C3: TAIYO YUDEN CERAMIC
JMK212BJ226MG-T
L1: TDK RLF7030T-4R7M3R4 4.7μH
L2: TDK RLF7030T-3R3M4R 3.3μH
OFF ON
SD3
SD2
SD1
PGND1 SGND PGND2
3520 TA04
LOW BATTERY OUTPUT
(ACTIVE LOW)
THRESHOLD = 2.3V
VOUT
3.3V
C3
22μF
500mA
1A FOR VIN ≥ 3V
VIN
750k
392k
RELATED PARTS
PART NUMBER
LTC3410/
LTC3410B
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LTC3456
LTC3522
LTC3530
LTC3532
LTC3548
DESCRIPTION
COMMENTS
300mA (IOUT), 2.25MHz Synchronous Buck VIN: 2.5V to 5.5V, VOUT(RANGE): 0.8V to VIN, IQ = 26μA, ISD < 1μA, SC70 Packages
DC/DC Converter
600mA (IOUT), 2MHz Synchronous Buck- VIN: 2.5V to 5.5V, VOUT(RANGE): 2.5V to 5.5V, IQ = 25μA, ISD < 1μA, MS and DFN Packages
Boost DC/DC Converter
1.2A (IOUT), 2MHz Synchronous Buck-
Boost DC/DC Converter
VIN: 2.4V to 5.5V, VOUT(RANGE): 2.4V to 5.25V, IQ = 25μA, ISD < 1μA, DFN Package
1.2A (IOUT), 2MHz Synchronous Buck-
Boost DC/DC Converter
VIN: 2.4V to 5.5V, VOUT(RANGE): 2.4V to 5.25V, IQ = 35μA, ISD < 1μA, DFN Package
600kHz, 1.2A, Synchronous Buck-Boost
DC/DC Converter
95% Efficiency, VIN: 2.4V to 5.5V, VOUT(RANGE): 2.4V to 5.25V, IQ = 25μA, ISD < 1μA, DFN
Package
1.5MHz, 400mA, Synchronous Buck-Boost VIN: 2.75V to 5.5V, VOUT(RANGE): 0.5V to 5V, ISD < 1μA, DFN Package
DC/DC Converter
Dual DC/DC Converter with USB Power
Manager and Li-Ion Battery Charger
96% Efficiency, Seamless Transition Between Inputs, IQ = 110μA, ISD < 2μA, QFN Package
Two Cell Multi-Output DC/DC Converter
with USB Power Manager
92% Efficiency, Seamless Transition Between Inputs, IQ = 180μA, ISD < 1μA, QFN Package
400mA (IOUT) Synchronous Buck-Boost
and 200mA Buck DC/DC Converters
600mA (IOUT), 2MHz Synchronous Buck-
Boost DC/DC Converter
VIN: 2.4V to 5.5V, Buck-Boost VOUT(RANGE): 2.2V to 5.25V, Buck VOUT(RANGE): 0.6V to VIN,
IQ = 25μA, ISD < 1μA, QFN Package
VIN: 1.8V to 5.5V, VOUT(RANGE): 1.8V to 5.5V, IQ = 40μA, ISD < 1μA, DFN and
MSOP Packages
500mA (IOUT), 2MHz Synchronous Buck- VIN: 2.4V to 5.5V, VOUT(RANGE): 2.4V to 5.25V, IQ = 35μA, ISD < 1μA, DFN and
Boost DC/DC Converter
MSOP Packages
400mA/800mA, 2.25MHz Dual
95% Efficiency, VIN: 2.5V to 5.5V, VOUT(MIN) = 0.6V, IQ = 40μA, ISD < 1μA, DFN and
Synchronous Step-Down DC/DC Converter MSOP Packages
24 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
3520fa
LT 0609 REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2007
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