LTC3114-1_15 Datasheet, PDF (7/34 Pages) Linear Technology – 40V, 1A Synchronous Buck-Boost DC/DC Converter with Programmable Output Current

LTC3114-1
TYPICAL PERFORMANCE CHARACTERISTICS (T_A = 25°C unless otherwise specified)
Inductor Zero Current Threshold
vs Temperature
115
V_IN = 24V
112
109
106
103
100
–60 –30
0 30 60 90
TEMPERATURE (°C)
120 150
31141 G25
Load Transient in Buck Mode,
100mA to 600mA
SW1/SW2 Minimum Low Times
vs Temperature
120
V_IN = 24V
114
108
102
96
90
–60 –30
0 30 60 90
TEMPERATURE (°C)
120 150
31141 G26
Load Transient in Boost Mode,
100mA to 600mA
SW1/SW2 Minimum Low Times
vs LDO
170
IN APPLICATION
160
150
140
130
120
110
100
90
2.7
3.4
4.1
4.8
LDO VOLTAGE (V)
5.5
31141 G27
Output Voltage Ripple in Burst
Mode Operation
LOAD
CURRENT
500mA/DIV
V_OUT
200mV/DIV
LOAD
CURRENT
500mA/DIV
V_OUT
200mV/DIV
V_OUT
50mV/DIV
V_IN = 14V
V_OUT = 5V
1ms/DIV
31141 G28
V_IN = 3.6V
V_OUT = 5V
1ms/DIV
31141 G29
V_IN = 14V
200µs/DIV
LOAD = 10mA
FRONT PAGE CIRCUIT
31141 G30
Burst Mode Operation to PWM
Mode Output Voltage Response
5V Output Voltage Response
to Fast Line Transient
(4V to 28V in 10µs)
Output Voltage Ripple in
PWM Mode
LOAD
CURRENT
500mA/DIV
V_OUT
50mV/DIV
1ms/DIV
V_IN
10V/DIV
V_OUT
100mV/DIV
31141 G31
V_OUT
20mV/DIV
50µs/DIV
31141 G32
500ns/DIV
31141 G33
For more information www.linear.com/LTC3114-1
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