LTC3543 Datasheet, PDF (16/16 Pages) Linear Technology – 600mA Synchronous Step Down Buck Regulator with PLL, Soft-Start and Spread Spectrum

LTC3543
TYPICAL APPLICATIO
PLL Application
INPUT CLOCK
2V/DIV
SW
2V/DIV
200ns/DIV
Li-Ion
BATTERY
2.7V TO 4.2V
V_IN
SW
10µF†
LTC3543
L
6.8µH*
R2
604k
1.5V
C_FWD
10pF
V_OUT
C_OUT ^1.5V
4.7µF**
PWR_EN
INPUT CLOCK (1MHz)
RUN
V_FB
MODE CAP
GND
EXPOSED
PAD
3543 TA06
R1
C1
402k
2.2nF
† muRata GRM40X5R106K1H520
* CoEv DN4835-6R8
** TDK TDKC2012X5R0J475MT
3543 TA05
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
LOAD CURRENT (mA)
1000
3543 TA07
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PART NUMBER
DESCRIPTION
COMMENTS
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LTC3443
LTC3531/LTC3531-3/
LTC3531-3.3
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LTC3548/LTC3548-1/
LTC3548-2
LTC3561
300mA (I_OUT), 1.5MHz, Synchrounous Step-Down
DC/DC Converter
600mA (I_OUT), 1.5MHz, Synchrounous Step-Down
DC/DC Converter
Dual 600mA/800mA (I_OUT), 1.5MHz/2.25MHz,
Synchrounous Step-Down DC/DC Converter
600mA (I_OUT), 1.7MHz/2.6MHz, Synchrounous
Step-Down DC/DC Converter
300mA (I_OUT), 2.25MHz, Synchrounous Step-Down
DC/DC Converter
1.25A (I_OUT), 4MHz, Synchrounous Step-Down
DC/DC Converter
1.2A (I_OUT), 2MHz, Synchrounous Buck-Boost
DC/DC Converter
200mA (I_OUT), 1.5MHz, Synchrounous Buck-Boost
DC/DC Converter
500mA (I_OUT), 2MHz, Synchrounous Buck-Boost
DC/DC Converter
500mA (I_OUT), 2.25MHz, Synchrounous Step-Down
DC/DC Converter
Dual 300mA (I_OUT), 2.25MHz,
Synchrounous Step-Down DC/DC Converter
Dual 400mA/800mA (I_OUT), 2.25MHz,
Synchrounous Step-Down DC/DC Converter
1.25A (I_OUT), 4MHz, Synchrounous Step-Down
DC/DC Converter
95% 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
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V, I_Q = 40µA,
I_SD = <1µA, MS10E, DFN Packages
96% Efficiency, V_IN: 1.6V to 5.5V, V_OUT(MIN) = 0.6V, I_Q = 65µA,
I_SD = <1µA, DFN Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V, I_Q = 26µA,
I_SD = <1µA, SC70 Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V, I_Q = 60µA,
I_SD = <1µA, MS10, DFN Packages
95% Efficiency, V_IN: 2.4V to 5.5V, V_OUT(MIN): 2.4V to 5.25V, I_Q = 50µA,
I_SD = <1µA, DFN Package
95% Efficiency, V_IN: 1.8V to 5.5V, V_OUT(MIN): 2V to 5V, I_Q = 16µA,
I_SD = <1µA, ThinSOT, DFN Packages
96% Efficiency, V_IN: 2.4V to 5.5V, V_OUT(MIN): 2.4V to 5.25V, I_Q = 35µA,
I_SD = <1µA, MS10, DFN Packages
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V, I_Q = 26µA,
I_SD = <1µA, 2mm × 2mm DFN, ThinSOT Packages
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V, I_Q = 40µA,
I_SD = <1µA, DFN Package
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.6V, I_Q = 40µA,
I_SD = <1µA, MS10E, DFN Packages
95% Efficiency, V_IN: 2.5V to 5.5V, V_OUT(MIN) = 0.8V, I_Q = 240µA,
I_SD = <1µA, DFN Package
3543f
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