LTC3443 Linear Technology, LTC3443 Datasheet - Page 8

• Manufacturer Part Number: LTC3443
• Description: High Current Micropower 600kHz Synchronous Buck-Boost DC/DC Converter
• Manufacturer: Linear Technology

OPERATIO
LTC3443
8
U
BOOST
BOOST
Figure 2. Switch Control vs Internal Control Voltage, V
CYCLE
D
D
BUCK
DUTY
D
75%
MAX
MAX
MIN
0%
Figure 1. Simplified Diagram of Output Switches
PV
PWM CD SWITCHES
FOUR SWITCH PWM
PWM AB SWITCHES
9
IN
A ON, B OFF
D ON, C OFF
PMOS A
NMOS B
SW1
4
BOOST REGION
BUCK REGION
SW2
5
BUCK/BOOST REGION
V
OUT
8
3443 F01
PMOS D
NMOS C
V
3443 F02
OUT
CI
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