LTC3788-1 Datasheet, PDF (7/28 Pages) Linear Technology – 2-Phase, Dual Output Synchronous Boost Controller

TYPICAL PERFORMANCE CHARACTERISTICS
LTC3788-1
Quiescent Current vs Temperature
170
V_IN = 12V
160
V_FB = 1.25V
RUN2 = GND
150
140
130
120
110
100
–45 –20
5 30 55 80
TEMPERATURE (°C)
105 130
37881 G13
Shutdown (RUN) Threshold
vs Temperature
1.40
1.35
1.30
RUN RISING
1.25
1.20
RUN FALLING
1.15
1.10
–45 –20
5 30 55 80
TEMPERATURE (°C)
105 130
37881 G14
Undervoltage Lockout Threshold
vs Temperature
4.4
4.3
4.2
INTV_CC RISING
4.1
4.0
3.9
3.8
INTV_CC FALLING
3.7
3.6
3.5
3.4
–45 –20
5 30 55 80 105 130
TEMPERATURE (°C)
37881 G15
INTV_CC Line Regulation
5.5
5.4
5.3
5.2
5.1
5.0
4.9
4.8
4.7
4.6
4.5
0
5 10 15 20 25 30
INPUT VOLTAGE (V)
35 40
37881 G16
EXTV_CC Switchover and INTV_CC
Voltages vs Temperature
6.0
5.8
5.6
INTV_CC
5.4
5.2
5.0
4.8
EXTV_CC RISING
4.6
EXTV_CC FALLING
4.4
4.2
4.0
–45 –20
5 30 55 80
TEMPERATURE (°C)
105 130
37881 G17
INTV_CC vs INTV_CC Load Current
5.50
V_IN = 12V
5.45
5.40
EXTV_CC = 0V
5.35
5.30
5.25
5.20
EXTV_CC = 6V
5.15
5.10
5.05
5.00
0
20 40 60 80 100 120 140 160 180 200
INTV_CC LOAD CURRENT (mA)
37881 G18
Oscillator Frequency
vs Temperature
600
FREQ = INTV_CC
550
500
450
400
FREQ = GND
350
300
–45 –20
5 30 55 80
TEMPERATURE (°C)
105 130
37881 G19
37881f
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