Anachip AP450A 2 channel linear controller with enable function Datasheet

AP450
2 Channel Linear Controller with Enable Function
„ Features
„ General Description
- 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
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.
„ Applications
- Backlight inverter
- LCD Monitor
- XDROM, XDSL Product
„ Pin Descriptions
„ Pin Assignment
(Top View)
GND 1
EN1/2 2
OUT1 3
FB1
4
8
AP450
7
6
5
Vcc
VREF
OUT2
FB2
SOP-8L/PDIP-8L
Pin
Name
GND
Pin
No.
1
EN1/2
2
Channel 1/2 Enable Pin
OUT1
3
Linear Controller CH1output
FB1, 2
4, 5
OUT2
6
Linear Controller CH2 output
VREF
7
1.25V/0.8V Output
Vcc
8
Supply Voltage
Description
Signal Ground
Voltage Feedback
„ Ordering Information
AP450 X X X
Bandgap Version
A: 1.25VBG
B: 0.8VBG
Package
Packing
N: PDIP-8L
S: SOP-8L
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
2 Channel Linear Controller with Enable Function
„ Block Diagram
+
LPF
Amp
_
FB2
Buffer
+
_
FB1
LPF
Amp
Buffer
Current
Limit
OUT2
Current
Limit
OUT1
EN1/2
2.5V
VREF
Bandgap
Reference
UVLO
Vcc
GND
1.25V/0.8V
„ Absolute Maximum Ratings
Symbol
VCC
VI
VO1 / VO2
TOP
TST
TLEAD
Parameter
Supply voltage
Amplifier input voltage
Rating
Unit
22
V
20
V
-0.3≦V≦20
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
V
-20 to +85
o
C
-65 to +150
o
C
260
o
C
„ Recommended Operating Conditions
Symbol
Min.
Max.
Unit
Supply voltage
3.6
20
V
Amplifier input voltage
1.05
1.45
V
CH1 / CH2 Linear driver voltage to ground
-
Vcc-1.5
V
IFB
Current into feedback terminal
-
45
µA
RF
Feedback resistor
100
-
kΩ
TOP
Operating free-air temperature
-20
85
ºC
VCC
VI
VO1 / VO2
Parameter
Anachip Corp.
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Rev. 1.1 Sep 7, 2004
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AP450
2 Channel Linear Controller with Enable Function
„ Electrical Characteristics (T =25ºC, V
A
Reference (REF)
Symbol
Parameter
VO1 / VO2 connect to FB1 / FB2
VOUT1/2
Output voltage change with
temperature
Under voltage lockout (UVLO)
VUT
Upper threshold voltage (VCC)
VLWT
Lower threshold voltage (VCC)
VHT
Hysteresis (VCC)
Output section
CH1 Current Limit
ICL1
ICL2
CH2 Current Limit
Enable function
VIL
EN pin logic input threshold
voltage for EN1/2
VIH
IIL
EN pin logic input current for
EN1/2
IIH
Total device
Average supply current
ICCA
Thermal Resistor
Conditions
AP450A
AP450B
TA = -20ºC ~ 25ºC
TA = 25ºC ~ 85ºC
Min.
1.225
0.784
-
Typ.
1.25
0.800
-0.1
-0.2
Max.
1.275
0.816
±1
±1
Unit
-
2.9
2.4
500
-
V
V
mV
VCC=5V, VNOUT2=VFB2=0V
25
-
-
mA
VCC=5V, VNOUT3=VFB3=0V
25
-
-
mA
IO(REF) = 0.1mA
TA = 25ºC
Low (regulator ON)
High (regulator OFF)
-
1.3
2.0
V
%
%
0.6
V
-
V
Low (regulator ON)
-
-0.03
-
µA
High (regulator OFF)
-
0.3
-
µA
-
5
7
mA
-
90
-
O
-
O
SOP8
Thermal Resistor
Junction to Ambient
θJA
=6V)
CC
PDIP8
-
60
C/W
C/W
„ Typical Application Circuit
Vcc=12V
220µF
OFF ON
3.3V
VOUT3=1.8V
270Ω
1
GND
2
EN1/2
V
3
OUT1
OUT2
6
4
FB1
FB2
5
Vcc
220µF
220Ω
REF
8
7
0.1µF 3.3V
VOUT2=2.5V
390Ω
220µF
180Ω
AP450B
Anachip Corp.
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Rev. 1.1 Sep 7, 2004
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AP450
2 Channel Linear Controller with Enable Function
„ Typical Characteristics
REFERENCE OUTPUT VOLTAGE
v.s.
POWER-SUPPLY VOLTAGE
AVERAGE SUPPLY CURRENT
v.s.
POWER-SUPPLY VOLTAGE
Vref- Reference
Output Voltage
(V)
0.805
5
Icc-Average
Supply Current
(mA)
0.8025
0.8
0.7975
4
3
2
1
0
0.795
4
6
8
10
12
14
16
18
0
20
Vcc-Power Supply Voltage (V)
4
8
12
16
20
Vcc - Power-Supply Voltgae (V)
AVERAGE SUPPLY CURRENT
v.s.
AMBIENT TEMPERATRUE
ICC - Average
Supply Current
(mA)
7
6
5
4
3
2
-50
-25
0
25
50
75
100
TA - Ambient Temperatrure(℃)
„ Marking Information
(Top View)
5
8
Logo
Part No.
AP450 X
YY WW X
1
Bandgap version
A: 1.25VBG
B: 0.8VBG
ID code: internal
4
Xth week: 01~52
Year: "01" =2001
"02" =2002
~
SOP-8L/PDIP-8L
Anachip Corp.
www.anachip.com.tw
Rev. 1.1 Sep 7, 2004
4/6
AP450
2 Channel Linear Controller with Enable Function
„ Package Information
(1) PDIP-8L (Plastic Dual-in-line Package )
D
E1
E-PIN O0.118 inch
E
15 (4X)
PIN #1 INDENT O0.025 DEEP 0.006-0.008 inch
C
7 (4X)
A1
L
A
A2
eB
B
S
Symbol
A
A1
A2
B
B1
B2
C
D
E
E1
e
L
eB
S
e
B1
B2
Dimensions in millimeters
Min.
Nom.
Max.
5.33
0.38
3.1
3.30
3.5
0.36
0.46
0.56
1.4
1.52
1.65
0.81
0.99
1.14
0.20
0.25
0.36
9.02
9.27
9.53
7.62
7.94
8.26
6.15
6.35
6.55
2.54
2.92
3.3
3.81
8.38
8.89
9.40
0.71
0.84
0.97
Anachip Corp.
www.anachip.com.tw
Dimensions in inches
Min.
Nom.
Max.
0.210
0.015
0.122
0.130
0.138
0.014
0.018
0.022
0.055
0.060
0.065
0.032
0.039
0.045
0.008
0.010
0.014
0.355
0.365
0.375
0.300
0.313
0.325
0.242
0.250
0.258
0.100
0.115
0.130
0.150
0.330
0.350
0.370
0.028
0.033
0.038
Rev. 1.1 Sep 7, 2004
5/6
AP450
2 Channel Linear Controller with Enable Function
„ Package Information (Continued)
H
E
(2) SOP- 8L(JEDEC Small Outline Package)
L
VIEW "A"
D
0.015x45
7 (4X)
e
B
A1
C
A
A2
7 (4X)
VIEW "A"
y
Symbol
A
A1
A2
B
C
D
E
e
H
L
y
θ
Dimensions In Millimeters
Min.
Nom.
Max.
1.40
1.60
1.75
0.10
0.25
1.30
1.45
1.50
0.33
0.41
0.51
0.19
0.20
0.25
4.80
5.05
5.30
3.70
3.90
4.10
1.27
5.79
5.99
6.20
0.38
0.71
1.27
0.10
0O
8O
Anachip Corp.
www.anachip.com.tw
Dimensions In Inches
Min.
Nom.
Max.
0.055
0.063
0.069
0.040
0.100
0.051
0.057
0.059
0.013
0.016
0.020
0.0075
0.008
0.010
0.189
0.199
0.209
0.146
0.154
0.161
0.050
0.228
0.236
0.244
0.015
0.028
0.050
0.004
0O
8O
Rev. 1.1 Sep 7, 2004
6/6
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