LTC3857IUH#TRPBF Linear Technology, LTC3857IUH#TRPBF Datasheet - Page 7

• Manufacturer Part Number: LTC3857IUH#TRPBF
• Description: IC CTRLR STP-DN SYNC DUAL 32QFN
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3857IUH#TRPBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 24 V
• Frequency - Switching: 50kHz ~ 900kHz
• Voltage - Input: 4 ~ 38 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -

TYPICAL PERFORMANCE CHARACTERISTICS
–200
–250
–300
–350
–100
–150
–400
–450
–500
–550
–600
1.10
1.05
1.00
0.95
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
–20
–20
–20
–
Pin Input Current
V
V
5
5
5
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
OUT
OUT
< INTV
> INTV
30
30
30
CC
CC
55
55
55
– 0.5V
– 0.5V
80
80
80
105
105
105
3857 G19
3857 G22
3857 G25
130
130
130
1.40
1.35
1.10
1.30
1.25
1.20
1.15
356
354
344
352
350
348
346
30
25
20
15
10
0
5
–45
5
5
Shutdown (RUN) Threshold
vs Temperature
Shutdown Current
vs Input Voltage
Oscillator Frequency
vs Input Voltage
FREQ = GND
–20
10
10
15
15
5
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
TEMPERATURE (°C)
RUN FALLING
RUN RISING
20
20
30
55
25
25
80
30
30
105
35
35
3857 G23
3857 G26
3857 G20
130
40
40
600
550
300
796
500
450
400
350
800
806
804
802
800
798
794
792
20
18
16
14
12
10
8
6
4
–45
–45
–45
Regulated Feedback Voltage
vs Temperature
Oscillator Frequency
vs Temperature
Shutdown Current vs Temperature
–20
–20
–20
5
5
5
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
FREQ = INTV
FREQ = GND
30
30
30
LTC3857
55
55
55
CC
80
80
80
105
105
105
3857 G21
3857 G24
3857 G27
3857fc
7
130
130
130