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2STR1215 Datasheet(PDF) 6 Page - STMicroelectronics

Part # 2STR1215
Description  38 V, 10 W synchronous iso-buck converter for isolated applications
PDF  56 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

2STR1215 Datasheet(HTML) 6 Page - STMicroelectronics

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4
Electrical characteristics
TJ = 25 °C, VIN = 12 V unless otherwise specified.
Table 6. Electrical characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VIN
Operating input voltage range
3.5
38
V
VINH
VCC rising threshold
2.3
3.3
V
VINL
VCC UVLO falling threshold
2.15
3.15
V
IPK (1)
Peak current limit
Duty cycle < 40%
4.1
4.6
A
Duty cycle = 99%.
Closed loop operation
3.1
3.6
A
IVY
Valley current limit
3.3
3.9
4.6
A
IVY_SINK (1)
Reverse current limit
VOUT overvoltage
4
4.5
5
A
RDSON_HS
High-side RDSON
0.130
Ω
RDSON_LS
Low-side RDSON
0.085
Ω
TOFF_MIN
Minimum off-time
200
ns
TON_MIN
Minimum on-time
330
390
450
ns
Enable
VWAKE_UP
Wake-up threshold
Rising
0.7
V
Falling
0.2
V
VEN
Enable threshold
Rising
1.08
1.2
1.32
V
Hysteresis
0.2
V
VCC regulator
VCC
LDO output voltage
3.0
3.3
3.6
V
Power consumption
ISHTDWN
Shutdown current from VIN
VEN = GND
2
3
μA
IQ_VIN
Quiescent current from VIN
VBIAS = GND
1.6
2.3
3
mA
VBIAS = 5 V
300
550
800
μA
IQ_VBIAS
Quiescent current from VBIAS
VBIAS = 5 V
1.3
1.8
2.3
μA
Soft-start
TSS
Internal soft-start
1
1.3
1.6
ms
Error amplifier
VFB
Voltage feedback
-40 °C ≤ TJ ≤ 125 °C (2)
0.845
0.85
0.855
V
Overvoltage protection
VOVP
Overvoltage trip (VOVP/VREF)
115
120
125
%
VOVP_HYST
Overvoltage hysteresis
1
2
6
%
Synchronization
fCLKIN
Synchronization range
200
1000
kHz
VCLKIN_TH
Amplitude of synchronization clock
2.3
V
L6983I
Electrical characteristics
DS14040 - Rev 1
page 6/56



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