ltc3890-1 Linear Technology Corporation, ltc3890-1 Datasheet - Page 7

• Manufacturer Part Number: ltc3890-1
• Description: 60v Low Iq, Dual, 2-phase Synchronous Step-down Dc/dc Controller
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
–200
–250
–300
–350
–100
–150
–400
–450
–500
–550
–600
–650
–700
–750
–800
0.95
1.10
1.05
1.00
0.90
–50
4.4
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.6
3.5
3.4
50
0
–45
–45
–45
TRACK/SS Pull-Up Current
vs Temperature
SENSE
vs Temperature
Undervoltage Lockout Threshold
vs Temperature
–25
–20
–20
–
–5
Pin Total Input Bias Current
5
V
TEMPERATURE (°C)
V
5
TEMPERATURE (°C)
TEMPERATURE (°C)
OUT
OUT
15
FALLING
RISING
< INTV
30
> INTV
30
35
CC
CC
55
55
55
– 0.5V
– 0.5V
75
80
80
95
105
105
38901 G19
38901 G22
38901 G25
115
130
130
1.40
1.35
1.20
1.10
1.05
1.00
1.30
1.25
1.15
356
354
352
350
348
346
344
30
25
20
15
10
5
0
–45
5
Shutdown (RUN) Threshold
vs Temperature
Shutdown Current vs Input
Voltage
Oscillator Frequency vs Input
Voltage
5
FREQ = GND
10
RUN1 RISING
10
–20
RUN1 FALLING
15
15
20
20
5
TEMPERATURE (°C)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
25
25
30 35 40 45 50 55 60 65
30
30 35 40 45 50 55 60 65
RUN2 FALLING
55
RUN2 RISING
80
105
38901 G20
38901 G23
38901 G26
130
796
600
550
500
450
400
350
300
800
806
804
802
800
798
794
792
22
20
18
16
14
12
10
8
–45
–45
–45
Regulated Feedback Voltage
vs Temperature
Oscillator Frequency
vs Temperature
Shutdown Current vs Temperature
V
IN
–20
–20
–20
= 12V
5
5
5
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
FREQ = INTV
LTC3890-1
FREQ = GND
30
30
30
55
55
55
CC
80
80
80
105
105
105
38901 G21
38901 G24
38901 G27
38901f
7
130
130
130