Linear Controller. AP450 Datasheet

AP450 Controller. Datasheet pdf. Equivalent

AP450 Datasheet
Recommendation AP450 Datasheet
Part AP450
Description 2 Channel Linear Controller
Feature AP450; www.DataSheet4U.com AP450 2 Channel Linear Controller with Enable Function „ Features - 2 Channel .
Manufacture Anachip
Datasheet
Download AP450 Datasheet




Anachip 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



Anachip 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



Anachip AP450
www.DataSheet4U.com
2 Channel Linear Controller with Enable Function
AP450
„ Electrical Characteristics (TA=25ºC, VCC=6V)
Reference (REF)
Symbol
Parameter
VOUT1/2
VO1 / VO2 connect to FB1 / FB2
Output voltage change with
temperature
Under voltage lockout (UVLO)
VUT
VLWT
Upper threshold voltage (VCC)
Lower threshold voltage (VCC)
VHT Hysteresis (VCC)
Output section
ICL1 CH1 Current Limit
ICL2 CH2 Current Limit
Enable function
VIL EN pin logic input threshold
VIH voltage for EN1/2
IIL
IIH
Total device
EN pin logic input current for
EN1/2
ICCA Average supply current
Thermal Resistor
θJA
Thermal Resistor
Junction to Ambient
Conditions
AP450A
AP450B
TA = -20ºC ~ 25ºC
TA = 25ºC ~ 85ºC
IO(REF) = 0.1mA
TA = 25ºC
VCC=5V, VNOUT2=VFB2=0V
VCC=5V, VNOUT3=VFB3=0V
Low (regulator ON)
High (regulator OFF)
Low (regulator ON)
High (regulator OFF)
SOP8
PDIP8
Min.
1.225
0.784
-
-
Typ.
1.25
0.800
-0.1
-0.2
Max.
1.275
0.816
±1
±1
Unit
V
%
%
- 2.9 - V
- 2.4 - V
- 500 - mV
25 -
25 -
- mA
- mA
- 1.3 0.6 V
2.0 - V
- -0.03 -
µA
- 0.3 - µA
- 5 7 mA
- 90 - OC/W
- 60 - OC/W
„ Typical Application Circuit
Vcc=12V
OFF ON
3.3V
VOUT3=1.8V
220µF
270
220
1 GND
2 EN1/2
3 OUT1
4 FB1
Vcc 8
V REF
7
OUT2 6
FB2 5
AP450B
220µF
0.1µF 3.3V
390
180
VOUT2=2.5V
220µF
Anachip Corp.
www.anachip.com.tw
Rev. 1.1 Sep 7, 2004
3/6







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