AP494 查看數據表（PDF） - Anachip Corporation
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AP494 Datasheet PDF : 9 Pages
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Voltage Mode PWM Controller
AP494
Electrical Characteristics(Continued)
(VCC=15V, CT=0.01µF, RT=12 KΩ, unless otherwise noted.) For typical values TA=25oC, for min/max values TA is the operating ambient
temperature range that applies, unless otherwise noted)
Characteristics
Symbol Min Typ Max Unit
OSCILLATOR SECTION
Frequency (CT=0.01µF,RT=12 kΩ)
Standard Deviation of Frequency* (CT=0.001µF, RT=30 kΩ)
Frequency Change with Voltage (VCC=7.0V to 40V, TA=25oC)
Frequency Change with Temperature (ΔTA=Tlow to Thigh)
(CT=0.01µF, RT=12 kΩ)
fOSC
-
σfOSC
-
ΔfOSC (ΔV) -
ΔfOSC (ΔT) -
10 - kHz
3.0 - %
0.1 - %
- 12 %
TOTAL DEVICE
Standby Supply Current(Pin6 at Vref, All other inputs and outputs
open)
(VCC=15V)
(VCC=40V)
ICC
mA
- 5.5 10
- 7.0 15
Average Supply Current
mA
(CT=0.01µF, RT=12 kΩ, V(Pin4)=2.0V)
- 7.0 -
(VCC=15V) (See Figure 4)
*Standard deviation is a measure of the statistical distribution about the mean as derived from the formula,
( ) N
2
σ=
∑
n=1
Xn
−
X
N−1
Figure 1. PARAMETER MEASUREMENT INFORMATION
Anachip Corp.
www.anachip.com.tw
Vcc=15V
Test
Inputs
50 KΩ
12
Vcc
4
DTC
8
C1
3
12 KΩ 6
FEEDBACK
RT
9
E1
11
C2
5
0.01μF
1
2
16
15
CT
1 IN +
1 IN -
2 IN +
2 IN -
10
E2
Error
Amplifiers
13 OUTPUT
CTRL
GND
7
14
REF
150Ω
2W
150Ω
2W
Output 1
Output 2
TEST CIRCUIT
Rev.1.0 Oct 11, 2004
4/9
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