LTC3626_15 Datasheet, PDF (6/28 Pages) Linear Technology – 20V, 2.5A Synchronous Monolithic Step-Down Regulator with Current and Temperature Monitoring

LTC3626
Typical Performance Characteristics
T_A = 25°C, PV_IN = SV_IN = 12V, f = 1MHz unless otherwise noted.
Output Current Monitor
vs Output Current
2.50
156
Output Current Monitor Error
vs Output Current
5
2.25
4
3
2.00
125
2
1.75
1
1.50
94
1.25
1.00
63
T_A = 85°C
0.75
T_A = 25°C
T_A = –40°C
0.50
31
0.5 0.75 1.0 1.25 1.5 1.75 2.0 2.25 2.5
OUTPUT CURRENT (A)
0
–1
–2
–3
–4
–5
1
T_A = 85°C
T_A = 25°C
T_A = –40°C
1.25 1.5 1.75 2 2.25 2.5
OUTPUT CURRENT (A)
3626 G09
3626 G10
Input Current Monitor
vs Input Current
0.50
31
0.45
28
0.40
25
0.35
22
0.30
19
0.25
16
0.20
13
T_A = 85°C
0.15
T_A = 25°C 9
T_A = –40°C
0.10
6
0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
INPUT CURRENT (A)
3626 G11
Input Current Monitor Error
vs Input Current
10
8
6
4
2
0
–2
–4
–6
T_A = 85°C
–8
T_A = 25°C
T_A = –40°C
–10
0.16 0.20 0.24 0.28 0.32 0.36 0.40 0.44 0.48
INPUT CURRENT (A)
3626 G12
Quiescent Current vs V_IN
(Burst Mode Operation)
500
450
400
350
300
250
200
T_A = 85°C
150
T_A = 25°C
T_A = –40°C
100
4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
3626 G13
Oscillator Frequency
vs Temperature
10
R_T = 158kΩ
8
6
4
2
0
–2
–4
–6
–8
–10
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3626 G14
Oscillator Internal Set Frequency
vs Temperature
2.6
R_T = INTV_CC
2.4
2.2
2.0
1.8
1.6
1.4
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3626 G15
TRACK/SS Pull-Up Current
vs Temperature
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3626 G16
3626fa
6
For more information www.linear.com/LTC3626