LTC3606B_15 Datasheet, PDF (20/20 Pages) Linear Technology – 800mA Synchronous Step-Down DC/DC with Average Input Current Limit

LTC3606B
TYPICAL APPLICATIONS
800mA Buck Converter, I_LIM = 500mA
V_IN
USB INPUT 5V
PGOOD
C_IN
10μF
R_PGD
499k
V_IN
SW
LTC3606B
RUN
PGOOD
RLIM
V_FB
GND
C_LIM
R_LIM
1000pF 110k
L1
1.5μH
R2
1210k
R1
255k
V_OUT
3.4V AT
800mA
+ C_OUT
2.2mF
s2
SuperCap
C_IN: AVX 08056D106KAT2A
C_OUT: VISHAY 592D228X96R3X2T20H
L1: COILCRAFT LPS4012-152ML
3606B TA02
800mA Buck Converter, I_LIM = 475mA or Disabled
L1
V_IN
USB INPUT 5V
1.5μH
V_IN
SW
R_PGD
LTC3606B
C_IN ^499k
10μF
RUN
PGOOD
+
R2
1210k
RLIM
V_FB
PGOOD
I_LIM
DISABLE
R_LIM
116k
GND
C_LIM
2200pF
R1
255k
V_OUT
3.4V AT
800mA
C_OUT
2.2mF
×2
SuperCap
C_IN: AVX 08056D106KAT2A
C_OUT: VISHAY 592D228X96R3X2T20H
L1: COILCRAFT LPS4012-152ML
3606B TA03
RELATED PARTS
PART NUMBER
LTC3619/LTC3619B
LTC3127
LTC3125
LTC3417A/
LTC3417A-2
LTC3407A/
LTC3407A-2
LTC3548/LTC3548-1/
LTC3548-2
LTC3546
DESCRIPTION
COMMENTS
Dual 400mA and 800mA I_OUT, 2.25MHz,
Synchronous Step-Down DC/DC Converter
95% Efficiency, V_IN(MIN) = 2.5V, V_IN(MAX) = 5.5V, V_OUT(MIN) = 0.6V,
I_Q = 50μA, I_SD < 1μA, MS10E, 3mm × 3mm DFN-10
1.2A I_OUT, 1.6MHz, Synchronous Buck-Boost DC/DC 94% Efficiency, V_IN(MIN) = 1.8V, V_IN(MAX) = 5.5V, V_OUT(MAX) = 5.25V,
Converter with Adjustable Input Current Limit
I_Q = 18μA, I_SD < 1μA, 3mm × 3mm DFN-MSOP10E
1.2A I_OUT, 1.6MHz, Synchronous Boost DC/DC
Converter with Adjustable Input Current Limit
94% Efficiency, V_IN(MIN) = 1.8V, V_IN(MAX) = 5.5V, V_OUT(MAX) = 5.25V,
I_Q = 15μA, I_SD < 1μA, 2mm × 3mm DFN-8
Dual 1.5A/1A, 4MHz, Synchronous Step-Down
DC/DC Converter
95% Efficiency, V_IN(MIN) = 2.3V, V_IN(MAX) = 5.5V, V_OUT(MIN) = 0.8V,
I_Q = 125μA, I_SD = <1μA, TSSOP-16E, 3mm × 5mm DFN-16
Dual 600mA/600mA, 1.5MHz, Synchronous
Step-Down DC/DC Converter
95% Efficiency, V_IN(MIN) = 2.5V, V_IN(MAX) = 5.5V, V_OUT(MIN) = 0.6V,
I_Q = 40μA, I_SD = <1μA, MS10E, 3mm × 3mm DFN-10
Dual 400mA and 800mA I_OUT, 2.25MHz,
Synchronous Step-Down DC/DC Converter
95% Efficiency, V_IN(MIN) = 2.5V, V_IN(MAX) = 5.5V, V_OUT(MIN) = 0.6V,
I_Q = 40μA, I_SD = <1μA, MS10E, 3mm × 3mm DFN-10
Dual 3A/1A, 4MHz, Synchronous Step-Down
DC/DC Converter
95% Efficiency, V_IN(MIN) = 2.3V, V_IN(MAX) = 5.5V, V_OUT(MIN) = 0.6V,
I_Q = 160μA, I_SD = <1μA, 4mm × 5mm QFN-28
20 LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3606bfb
LT 0812 REV B • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2009