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Número de pieza | IR3312 | |
Descripción | PROGRAMMABLE CURRENT SENSING HIGH SIDE SWITCH | |
Fabricantes | International Rectifier | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de IR3312 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
No Preview Available ! Data Sheet No.PD60211 rev.D
IR3312(S)
PROGRAMMABLE CURRENT SENSING HIGH SIDE SWITCH
Features
• Load current feedback
• Programmable over current shutdown
• Active clamp
• E.S.D protection
• Input referenced to Vcc
• Over temperatue shutdown
• Reverse battery protection
Description
The IR 3312(S) is a Fully Protected 4 terminal high side switch.
The input signal is referenced to Vcc. When the input voltage
Vcc - Vin is higher than the specified Vih threshold, the output
power MOSFET is turned-on. When Vcc - Vin is lower than
the specified Vil threshold, the output MOSFET is turned-off.
A sense current proportional to the current in the power Mosfet
is sourced to the Ifb pin. Over-current shutdown occurs when
Vifb - Vin > 4.5 V. The current shutdown threshold is adjusted
by selecting the proper RIfb. Either over-current and over-tem-
perature latches off the switch. The device is reset by pulling
the input pin high. Other integrated protections ( ESD, reverse
battery, active clamp ) make the IR3312(S) very rugged and
suitable for the automotive environment.
Product Summary
Rds(on)
Vcc.op.
Current ratio
20mΩ
6 to 28V
2800
Ishutdown
3 to 30A
Active clamp 35V
Load Dump
40V
Package
5 Lead TO220
IR3312
5 Lead
D2Pak (SMD220)
IR3312S
Typical Connection
on
off
www.irf.com
VCC
IN IR 3312
Battery
Ifb
10 k
RIfb
System
Ground
OUT
LOAD
Power
Ground
1
1 page Lead Assignments
3 (Vcc)
12345
5 Lead - TO220
IR3312
IR3312(S)
1 - In
2 - Ifb
3 - Vcc (tab)
4 - NC
5 - Out
3 (Vcc)
12345
Part Number
5 Lead - D2PAK (SMD220)
IR3312S
Vcc-Vin
Vcc-Vin max
Vcc-Vin1 max
Vcc-Vin (op)
Vih
Vil
Vhys
Vcc
In
IR3312
Iin
Iin max
Iin1,2
Iin(on)
VIfb Ifb Out
Ifb
Vcc-Vout
Vcc-Vout max
Vclamp1
Vclamp2
Iout
Iout max
-Ids cont.
-Ids pulsed
Iout 85°C
Isd
Iq
Figure 1 - Voltages and currents definitions
WWW.IRF.COM
Vcc-Vin
Vcc
90%
Vcc-Vout
5V
10 %
Td on
Tr1
DV/dt(on)
Tr2
Figure 2 - Switching time definitions (turn-on)
5
5 Page Case Outline 5 Lead - D2PAK (SMD220)
IR3312(S)
WWW.IRF.COM
11
11 Page |
Páginas | Total 12 Páginas | |
PDF Descargar | [ Datasheet IR3312.PDF ] |
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