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AP2004NL Datasheet(PDF) 3 Page - Anachip Corp

Part # AP2004NL
Description  PWM Buck Controller
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Manufacturer  ANACHIP [Anachip Corp]
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AP2004NL Datasheet(HTML) 3 Page - Anachip Corp

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AP2004
PWM Buck Controller
Anachip Corp.
www.anachip.com.tw
Rev. 0.4 Apr 6, 2004
3/8
Recommended Operating Conditions
Symbol
Parameter
Min.
Max.
Unit
VCC
Supply voltage
3.6
27
V
VI
Amplifier input voltage
1.05
1.45
V
VO
Collector output voltage
Vcc-1.5
V
IFB
Current into feedback terminal
45
µA
RF
Feedback resistor
100
kΩ
CT
Timing capacitor
100
6800
pF
FOSC
Oscillator frequency
10
300
KHz
TOP
Operating free-air temperature
-20
85
ºC
Electrical Characteristics (T
A=25ºC, VCC=6V, f=200 Khz)
Reference (REF)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
Comp connect to FB
1.225
1.25
1.275
V
TA = -20ºC ~ 25ºC
-0.1
±1
%
VREF
Output voltage change with
temperature
TA = 25ºC ~ 85ºC
-0.2
±1
%
Under voltage lockout (UVLO)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
VUT
Upper threshold voltage (VCC)
2.9
V
VLWT
Lower threshold voltage (VCC)
2.4
V
VHT
Hysteresis (VCC)
IO(REF) = 0.1mA
TA = 25ºC
500
mV
Short-circuit protection (SCP) control
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
VIT
Input threshold voltage
TA = 25ºC
0.60
0.67
0.75
V
VSTB
Standby voltage
No pull up
100
130
160
mV
VLT
Latched input voltage
No pull up
50
100
mV
ISCP
Input (source) current
VI = 0.7V, TA = 25ºC
-10
-15
-20
µA
VCT
Comparator threshold voltage
(COMP)
1.5
V
Oscillator (OSC)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
FOSC
Frequency
CT =270 pF
200
KHz
Standard deviation of frequency
CT =270 pF
10
∆FOSC
Frequency change with voltage
VCC=3.6V ~ 20V
1
%


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