LTC3869-2_15 Datasheet, PDF (7/42 Pages) Linear Technology – Dual, 2-Phase Synchronous Step-Down DC/DC Controllers

LTC3869/LTC3869-2
Typical Performance Characteristics T_A = 25°C, unless otherwise noted.
TK/SS Pull-Up Current
vs Temperature
1.6
1.4
1.2
1.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3869 G17
Regulated Feedback Voltage
vs Temperature
604
602
600
598
596
594
592
590
–40 –15
10 35 60 85
TEMPERATURE (°C)
110 125
3869 G19
Undervoltage Lockout Threshold
(INTV_CC) vs Temperature
4.1
3.9
RISING
3.7
3.5
3.3
FALLING
3.1
2.9
2.7
2.5
–40 –20
0 20 40 60
TEMPERATURE (°C)
80 100
3869 G21
Shutdown (RUN) Threshold
vs Temperature
1.24
1.22
ON
1.20
1.18
1.16
1.14
1.12
OFF
1.10
1.08
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3869 G18
Oscillator Frequency
vs Temperature
900
800
700
V_FREQ = INTV_CC
600
500
V_FREQ = 1.2V
400
300
200
V_FREQ = GND
100
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3869 G20
Oscillator Frequency
vs Input Voltage
520
510
500
490
480
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
3869 G22
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