LTC3603_15 Datasheet, PDF (4/22 Pages) Linear Technology – 2.5A, 15V Monolithic Synchronous Step-Down Regulator

LTC3603
Typical Performance Characteristics
Burst Mode Operation
Load Step Transient
Forced Continuous
OUTPUT
VOLTAGE
50mV/DIV
INDUCTOR
CURRENT
500mA/DIV
V_IN = 12V
V_OUT = 3.3V
LOAD = 50mA
10µs/DIV
3603 G01
OUTPUT
VOLTAGE
100mV/DIV
LOAD
CURRENT
1A/DIV
V_IN = 12V
V_OUT = 3.3V
10µs/DIV
3603 G02
V_REF vs Temperature
0.6006
V_IN = 12V
0.6004
0.6002
0.6000
0.5998
0.5996
0.5994
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3603 G03
PV_IN Leakage Current
vs Input Voltage
50
V_RUN = 0V
45
40
35
30
25
20
15
10
5
0
4 5 6 7 8 9 10 11 12 13 14 15
INPUT VOLTAGE (V)
3603 G06
Switch On-Resistance
vs Input Voltage
90
V_BOOST – V_SW = INTV_CC
85
80
TOP
75
70
65
60
55
50
45
BOTTOM
40
4 5 6 7 8 9 10 11 12 13 14 15
INPUT VOLTAGE (V)
3603 G04
Frequency vs R_OSC
3500
3000
2500
2000
1500
1000
500
0
0 50 100 150 200 250 300 350
R_OSC (kΩ)
3603 G07
Switch On-Resistance
vs Temperature
120
V_IN = 12V
100
TOP
80
60
BOTTOM
40
20
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3603 G05
Frequency vs Input Voltage
1040
R_OSC = 105kΩ
1030
1020
1010
1000
990
980
970
960
4 5 6 7 8 9 10 11 12 13 14 15
INPUT VOLTAGE (V)
3603 G08
3603fc
4
For more information www.linear.com/LTC3603