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參數(shù)資料
| 型號： | TDA3609JR |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Multiple voltage regulator with switch and ignition buffers |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PZFM17 |
| 封裝： | POWER, PLASTIC, DIL-BENT-SIL, 17 PIN |
| 文件頁數(shù)： | 2/20頁 |
| 文件大小： | 136K |
| 代理商： | TDA3609JR |
1997 Aug 15
2
Philips Semiconductors
Preliminary specification
Multiple voltage regulator with switch and
ignition buffers
TDA3609JR
FEATURES
General
Extreme low noise behaviour and good stability with
very small output capacitors
Two V
P
-state controlled regulators (regulator 1 and
regulator 3) and a power switch
Regulator 2, reset and ignition buffer operate during
load dump and thermal shutdown
Separate control pins for switching regulator 1,
regulator 3 and the power switch
Supply voltage range of
18 to +50 V
Low reverse current of regulator 2
Low quiescent current (when regulator 1, regulator 3,
and power switch are switched-off)
Hold output (only valid when regulator 1 is switched-on)
Reset and hold outputs (open collector outputs)
Adjustable reset delay time
High ripple rejection
Back-up capacitor for regulator 2
Two independent ignition buffers (one inverted and with
open collector output).
Protections
Reverse polarity safe (down to
18 V without high
reverse current)
Able to withstand voltages up to 18 V at the outputs
(supply line may be short-circuited)
ESD protected on all pins
Thermal protections with hysteresis
Load dump protection
Foldback current limit protection for
regulators 1, 2 and 3
Delayed second current limit protection for the power
switch (at short-circuit)
The regulator outputs and the power switch are DC
short-circuited safe to ground and V
P
.
GENERAL DESCRIPTION
The TDA3609JR is a multiple output voltage regulator with
a power switch and ignition buffers, intended for use in car
radios with or without a microcontroller. It contains:
Two fixed voltage regulators with a foldback current
protection (regulator 1 and regulator 3) and one fixed
voltage regulator (regulator 2), intended to supply a
microcontroller, that also operates during load dump
and thermal shutdown
A power switch with protections, operated by an enable
input
Reset and hold outputs that can be used to interface by
the microcontroller. The reset-signal can be used to call
up the microcontroller and the hold output indicates
regulator 1 voltage available and within range.
A supply pin which can withstand load dump pulses and
negative supply voltages.
Regulator 2 that will be switched on at a back-up voltage
greater than 6.5 V and off when the output voltage of
regulator 2 drops below 1.9 V.
A provision for use of a reserve supply capacitor that will
hold enough energy for regulator 2 (5 V continuous) to
allow a microcontroller to prepare for loss of voltage.
An inverted ignition 1 input with open collector output
stage.
An ignition 2 input Schmitt trigger with push pull output
stage.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA3609JR
DBS17P
plastic DIL-bent-SIL (special bent) power package; 17 leads
(lead length 12 mm)
SOT475-1
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