LTC3406-1.8_15 Datasheet, PDF (16/16 Pages) Linear Technology – 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

LTC3406
LTC3406-1.5/LTC3406-1.8
TYPICAL APPLICATIO
Single Li-Ion 1.8V/600mA Regulator for Low Output Ripple and Small Footprint
V_IN
2.7V
TO 4.2V
C_IN**
4.7µF
CER
4
V_IN
3
SW
LTC3406-1.8
1
RUN
5
V_OUT
4.7µH*
+
V_OUT
1.8V
C_OUT1†
100µF
GND
3406 TA01
2
*MURATA LQH32CN4R7M34
**TAIYO YUDEN CERAMIC JMK212BJ475MG
†_{SANYO POSCAP 4TPB100M}
95
V_OUT = 1.8V
90
85
V_IN = 2.7V
V_IN = 3.6V
80
V_IN = 4.2V
75
70
65
60
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
3406 TA02
V_OUT
100mV/DIV
AC COUPLED
I_L
500mA/DIV
I_LOAD
500mA/DIV
V_IN = 3.6V
40µs/DIV
V_OUT = 1.8V
I_LOAD = 0mA TO 600mA
3406 TA03
V_OUT
100mV/DIV
AC COUPLED
I_L
500mA/DIV
I_LOAD
500mA/DIV
V_IN = 3.6V
40µs/DIV
V_OUT = 1.8V
I_LOAD = 200mA TO 600mA
3406 TA04
RELATED PARTS
PART NUMBER
LTC1474/LTC1475
LT1616
LTC1701
LTC1767
LTC1779
LTC1875
LTC1877
LTC1878
LTC1879
LTC3404
LTC3405/LTC3405A
LTC3405A-1.5
LTC3405A-1.8
LTC3406B
LTC3406B-1.5
LTC3406B-1.8
LTC3411
LTC3412
DESCRIPTION
250mA (I_OUT) Low Quiescent Current Step-Down
DC/DC Converters
1.4MHz, 600mA Step-Down DC/DC Converter
1MHz, 500mA (I_OUT) Step-Down DC/DC Converter
1.5A, 1.25MHz Step-Down Switching Regulator
550kHz, 250mA (I_OUT) Step-Down Switching Regulator
550kHz, 1.2A (I_OUT) Synchronous Step-Down Regulator
550kHz, 600mA (I_OUT) Synchronous Step-Down Regulator
550kHz, 600mA (I_OUT) Synchronous Step-Down Regulator
550kHz, 1.2A (I_OUT) Synchronous Step-Down Regulator
1.4MHz, 600mA (I_OUT) Synchronous Monolithic
Step-Down Regulator
1.5MHz, 300mA (I_OUT) Synchronous Monolithic
Step-Down Regulators
1.5MHz, 600mA (I_OUT) Synchronous Monolithic
Step-Down Regulators
4MHz, 1.25A (I_OUT) Synchronous Monolithic
Step-Down Regulator
4MHz, 2.5A (I_OUT) Synchronous Monolithic
Step-Down Regulator
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
COMMENTS
V_IN: 3V to 18V, Constant Off-Time, I_Q = 10µA, MS8 Package
V_IN: 3.6V to 25V, I_Q = 1.9mA, ThinSOT Package
V_IN: 2.5V to 5.5V, Constant Off-Time, I_Q = 135µA, ThinSOT Package
V_IN: 3V to 25V, I_Q = 1mA, MS8/E Packages
V_IN: 2.5V to 9.8V, I_Q = 135µA, ThinSOT Package
V_IN: 2.7V to 6V, I_Q = 15µA, TSSOP-16 Package
V_IN: 2.65V to 10V, I_Q = 10µA, MS8 Package
V_IN: 2.65V to 6V, I_Q = 10µA, MS8 Package
V_IN: 2.7V to 10V, I_Q = 15µA, TSSOP-16 Package
Up to 95% Efficiency, V_IN: 2.65V to 6V, I_Q = 10µA, MS8 Package
Up to 95% Efficiency, V_IN: 2.5V to 5.5V, I_Q = 20µA,
Fixed Output Voltages Available, ThinSOT Package
Up to 95% Efficiency, with Pulse Skipping Mode
Fixed Output Voltages Available, ThinSOT Package
Up to 95% Efficiency, V_IN: 2.5V to 5.5V, I_Q = 60µA, MS Package
Up to 95% Efficiency, V_IN: 2.5V to 5.5V, I_Q = 60µA, TSSOP Package
3406fa
LT/TP 0604 1K REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2002