Document
NCP3712ASN, SZNCP3712ASN
Over Voltage Protected High Side Switch
This switch is primarily intended to protect loads from transients by isolating the load from the transient energy rather than absorbing it.
Features
• Capable of Switching Loads of up to 200 mA without External
Rboost
• Switch Shuts Off in Response to an Over Voltage Input Transient • Features Active Turn Off for Fast Input Transient Protection • Flexible Over Voltage Protection Threshold Set with External Zener • Automatic Recovery after Transient Decays Below Threshold • Withstands Input Transients up to 105 V Peak • Guaranteed Off State with Enbl Input • ESD Resistant in Accordance with the 2000 V Human Body Model • Extremely Low Saturation Voltage • SZ Prefix for Automotive and Other Applications Requiring Unique
Site and Control Change Requirements; AEC−Q101 Qualified and PPAP Capable
• These are Pb−Free Devices
Applications Include:
• High Voltage Transient Isolation • Power Switching to Electronic Modules • DC Power Distribution in Line Operated Equipment • Buffering Sensitive Circuits from Poorly Regulated Power Supplies • Pre−conditioning of Voltage Regulator Input Voltage
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MARKING DIAGRAM
6 1
SC−74 CASE 318F
BAG MG G
BAG = Device Code M = Date Code G = Pb−Free Package (Note: Microdot may be in either location)
INTERNAL CIRCUIT DIAGRAM/ PIN CONFIGURATION
Vin Vout Q2
(5) R2
(6)
R4
Q1
N.C.
(2) R1
Rboost (3)
R3
Vin Vout
Rboost NCP3712ASN
+ P. S.
−
VZ Enbl
or
1 k (min)
Ropt
L O A D
SW
(4) VZ
(1) Enbl
ORDERING INFORMATION
Device
Package Shipping†
NCP3712ASNT1G
SC−74 3000 / Tape &
SZNCP3712ASNT1G (Pb−Free)
Reel
NCP3712ASNT3G
SC−74 10,000 / Tape &
SZNCP3712ASNT3G (Pb−Free)
Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
Figure 1. Typical Application Circuit
© Semiconductor Components Industries, LLC, 2014
June, 2014 − Rev. 8
1
Publication Order Number: NCP3712ASNT1/D
NCP3712ASN, SZNCP3712ASN
MAXIMUM RATINGS (TJ = 25°C unless otherwise noted) (Note 1) Rating
Symbol
Value
Unit
Input−to−Output Voltage Reverse Input−to−Vz. Voltage Reverse Input−to−Rboost Voltage Output Load Current − Continuous Enbl Input Current − Continuous Vz Input Current − Continuous Rboost Input Current − Continuous Junction Temperature Operating Ambient Temperature Range Storage Temperature Range Device Power Dissipation (Minimum Footprint) Derate Above 25°C
Vio Vin(rev) Vin(rev)
Iload Ienbl
Iz Iboost
TJ TA Tstg PD −
105 −9.0 − 5.0 −300 5.0 3.0 10 125 −40 to +85 −65 to +150 300 2.4
V V V mA mA mA mA °C °C °C mW mW/°C
Latchup Performance:
Positive Negative
ILatchup
200 mA 200
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. This device contains ESD protection and exceeds the following tests:
Human Body Model 1500 V per MIL−STD−883, Method 3015. Machine Model Method 150 V.
A+ 1N4004
0.01 mF TYP
FB*
0.027 mF TYP
18 V TYP Ropt
FB*
A− *FB = MMZ2012 Y601B
Enbl
Ienbl
1
N.C.
2 Rboost
Iboost
3
NCP3712 ASN
Vout 6 Vin
5 VZ
4
Iload IZ
Rload
Renbl
Figure 2. Typical Applications Circuit for Load Dump Transient Protection
KEY 0−500 W 1.0 k TYP
AMPLITUDE (V) AMPLITUDE (V)
15 13.5 V SUPPLY RAIL
“ENABLE NOT” 10 INPUT
50% AMPLITUDE
5
tpLH
DEVICE OUTPUT VOLTAGE
LOAD DEPENDENT EXP DECAY
0 0 5 10 15 20 25 30 35 40 45 50 TIME (ms)
Figure 3. Enable NOT Switching Waveforms
120 100
80 60 40 20 Voff
TYPICAL INPUT TRANSIENT
13.5 V SUPPLY RAIL
LOAD DEPENDENT OUTPUT EXP DECAY
Von
0 0 50 100 150 200 250 300 350 TIME (ms)
Figure 4. Load Dump Waveforms
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NCP3712ASN, SZNCP3712ASN
ELECTRICAL CHARACTERISTICS (Vin = 12.5 VDC Ref to Gnd, TA = 25°C unless otherwise noted.)
Characteristic
Symbol
Min
Typ
OFF CHARACTERISTICS
Input−Output Breakdown Voltage (@ Iout = 200 mA)
Output Reverse Breakdown Voltage (@ Iout = −1.0 mA Pulse)
Output Leakage Current (Vin = Venbl = 30 V, TA = 25°C)
Guaranteed “Off” State “ENBL NOT” Voltage (IO ≤ 100 mA)
Required “Off” State Iz Current (Rload = 100 W)
Vin(off) (Vz = 16 V, Iload = 100 mA, Renbl = 1500 W)
ON CHARACTERISTICS
Input−Output On Voltage (Io = 100 mA, Ienbl = −3.0 mA)
Output Load Current ⎯ Continuous (Ienbl = −3.0 mA, Vio(on) = 0.5 Vdc) (Iboost = −9.0 mA, Vio(on) = 0.5 Vdc) (Iboost = −9.0 mA, Vio(on) = 0.6 Vdc)
Vin(on) (Vz = 16 V, Iload = 100 mA, Renbl = 1500 W)
“ENBL NOT” Input Current (Io = 100 mA, Vio(on) = 0.35 Vdc, Renbl = 1500 W)
SWITCHING CHARACTERISTICS
Propagation Delay Time: Hi to Lo Prop Delay; Fig. 3 (Vin = Venbl = 13.5 V) Lo to Hi P.