AP450 Linear Controller Datasheet

AP450 Datasheet, PDF, Equivalent


Part Number

AP450

Description

2 Channel Linear Controller

Manufacture

Anachip

Total Page 6 Pages
Datasheet
Download AP450 Datasheet


AP450
www.DataSheet4U.com
2 Channel Linear Controller with Enable Function
AP450
„ Features
- 2 Channel Linear Control Circuitries
- Operating voltage can be up to 20V
- Under voltage Lockout (UVLO) Protection
- Current Limit
- Over Voltage Protection
- Power Good Function
- 1.25V/0.8V internal voltage reference
- 8-pin PDIP and SOP Pb-Free packages
„ Applications
- Backlight inverter
- LCD Monitor
- XDROM, XDSL Product
„ Pin Assignment
(Top View)
GND
EN1/2
OUT1
FB1
1
2
3
4
8 Vcc
AP450
7
6
VREF
OUT2
5 FB2
SOP-8L/PDIP-8L
„ General Description
The AP450 series integrates two channel linear
controllers into a single chip, mainly designs for
power-supply regulator. All the functions included
an on-chip 1.25V/0.8V reference output, error
amplifier, UVLO, current limit. During low VCC
situation, the UVLO makes sure that the outputs
are off until the internal circuit is operational
normally.
„ Pin Descriptions
Pin Pin
Name No.
Description
GND 1 Signal Ground
EN1/2 2 Channel 1/2 Enable Pin
OUT1 3 Linear Controller CH1output
FB1, 2 4, 5 Voltage Feedback
OUT2 6 Linear Controller CH2 output
VREF
Vcc
7 1.25V/0.8V Output
8 Supply Voltage
„ Ordering Information
AP450 X X X
Bandgap Version
A: 1.25VBG
B: 0.8VBG
Package
N: PDIP-8L
S: SOP-8L
Packing
Blank: Tube
A : Taping
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 1.1 Sep 7, 2004
1/6

AP450
www.DataSheet4U.com
2 Channel Linear Controller with Enable Function
„ Block Diagram
AP450
FB2
FB1
EN1/2
VREF
+
Amp
_
LPF
+
Amp
_
LPF
2.5V Bandgap
Reference
1.25V/0.8V
Buffer
Buffer
Current
Limit
OUT2
Current
Limit
OUT1
UVLO
Vcc
GND
„ Absolute Maximum Ratings
Symbol
VCC
VI
VO1 / VO2
TOP
TST
TLEAD
Parameter
Supply voltage
Amplifier input voltage
CH1 / CH1Linear driver voltage to ground
Operating temperature range
Storage temperature range
Lead temperature 1.6 mm(1/16 inch) from case for 10 seconds
„ Recommended Operating Conditions
Symbol
VCC
VI
VO1 / VO2
IFB
RF
TOP
Parameter
Supply voltage
Amplifier input voltage
CH1 / CH2 Linear driver voltage to ground
Current into feedback terminal
Feedback resistor
Operating free-air temperature
Min.
3.6
1.05
-
-
100
-20
Rating
22
20
-0.3V20
-20 to +85
-65 to +150
260
Max.
20
1.45
Vcc-1.5
45
-
85
Unit
V
V
V
oC
oC
oC
Unit
V
V
V
µA
k
ºC
Anachip Corp.
www.anachip.com.tw
Rev. 1.1 Sep 7, 2004
2/6


Features www.DataSheet4U.com AP450 2 Channel Lin ear Controller with Enable Function „ Features - 2 Channel Linear Control Ci rcuitries - Operating voltage can be up to 20V - Under voltage Lockout (UVLO) Protection - Current Limit - Over Volta ge Protection - Power Good Function - 1 .25V/0.8V internal voltage reference - 8-pin PDIP and SOP Pb-Free packages „ General Description The AP450 series i ntegrates two channel linear controller s into a single chip, mainly designs fo r power-supply regulator. All the funct ions included an on-chip 1.25V/0.8V ref erence output, error amplifier, UVLO, c urrent limit. During low VCC situation, the UVLO makes sure that the outputs a re off until the internal circuit is op erational normally. „ Applications - Backlight inverter - LCD Monitor - XDRO M, XDSL Product „ Pin Assignment (Top View) GND 1 EN1/2 2 OUT1 3 FB1 4 8 AP4 50 7 6 5 Vcc VREF OUT2 FB2 „ Pin Desc riptions Pin Name GND EN1/2 OUT1 FB1, 2 OUT2 VREF Vcc Pin No. 1 2 3 4, 5 6 7 8 Description Signal Ground Ch.
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