LTC3407AIDD Datasheet, PDF (16/16 Pages) Linear Integrated Systems – Dual Synchronous, 600mA, 1.5MHz Step-Down DC/DC Regulator

LTC3407
TYPICAL APPLICATION
2mm Height Lithium-Ion Single Inductor Buck-Boost Regulator and a Buck Regulator
V_IN = 2.8V
TO 4.2V
C1
10μF
RUN2 V_IN RUN1
MODE/SYNC
POR
R5
100k
POWER-ON
RESET
V_OUT2 = 3.3V
AT 200mA
+ _C6
47μF
D1
M1
C3
10μF
L2
10μH
LTC3407
SW2
SW1
L1
2.2μH
C4, 22pF
R4
887k R3
196k
V_FB2
GND
V_FB1
R2
R1 887k
442k
V_OUT1 = 1.8V
AT 600mA
C2
10μF
C1, C2, C3: TAIYO YUDEN JMK316BJ106ML
C6: SANYO 6TPB47M
D1: PHILIPS PMEG2010
Efficiency vs Load Current
90
80
4.2V
70
2.8V
3.6V
60
50
40 VOUT = 3.3V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
30
1
10
100
LOAD CURRENT (mA)
1000
3407 TA05
L1: MURATA LQH32CN2R2M33
L2: TOKO A914BYW-100M (D52LC SERIES)
M1: SILICONIX Si2302
3407 TA04
Efficiency vs Load Current
100
95
2.8V
90
3.6V
4.2V
85
80
75
70
65
V_OUT = 1.8V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
60
1
10
100
LOAD CURRENT (mA)
1000
3407 TA06
RELATED PARTS
PART NUMBER
DESCRIPTION
LT1616
500mA (I_OUT), 1.4MHz,
High Efficiency Step-Down DC/DC Converter
LT1940
Dual Output 1.4A(I_OUT), Constant 1.1MHz,
High Efficiency Step-Down DC/DC Converter
LTC3252
Dual 250mA (I_OUT), 1MHz, Spread Spectrum
Inductorless Step-Down DC/DC Converter
LTC3405/LTC3405A
300mA (I_OUT), 1.5MHz,
Synchronous Step-Down DC/DC Converters
LTC3406/LTC3406B
600mA (I_OUT), 1.5MHz,
Synchronous Step-Down DC/DC Converters
LTC3407
600mA (I_OUT), 1.5MHz,
Dual Synchronous DC/DC Converter
LTC3411
1.25A (I_OUT), 4MHz,
Synchronous Step Down DC/DC Converter
LTC3412
2.5A (I_OUT), 4MHz,
Synchronous Step Down DC/DC Converter
LTC3414
4A (I_OUT), 4MHz,
Synchronous Step Down DC/DC Converter
LTC3440/LTC3441
600mA/1.2A (I_OUT), 2MHz/1MHz,
Synchronous Buck-Boost DC/DC Converter
ThinSOT is a trademark of Linear Technology Corporation.
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
COMMENTS
90% Efficiency, V_IN: 3.6V to 25V, V_OUT(MIN) = 1.25V I_Q = 1.9mA,
I_SD <1μA, ThinSOT™ Package
V_IN: 3V to 25V, V_OUT(MIN) = 1.2V I_Q = 2.5mA, I_SD <1μA,
TSSOP-16E Package
88% Efficiency, V_IN: 2.7V to 5.5V, V_OUT(MIN): 0.9V to 1.6V, I_Q = 60μA
I_SD < 1μA, DFN-12 Package
96% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V I_Q = 20μA,
I_SD <1μA, ThinSOT Package
96% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V I_Q = 20μA,
I_SD <1μA, ThinSOT Package
96% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V I_Q = 40μA,
I_SD <1μA, MS10E Package, DFN Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V I_Q = 60μA,
I_SD <1μA, MSOP-10 Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V I_Q = 60μA,
I_SD <1μA, TSSOP-16E Package
95% Efficiency, V_IN: 2.25V to 5.5V, V_OUT(MIN) = 0.8V I_Q = 64μA,
I_SD <1μA, TSSOP-28E Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 2.5V I_Q = 25μA,
I_SD <1μA, MSOP-10 Package/DFN Package
3407fa
LT 0809 REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2003