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参数资料
| 型号： | NCV494BDR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 3/14页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR PWM VM 16-SOIC |
| 标准包装： | 1 |
| 系列： | SWITCHMODE™ |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 200kHz |
| 占空比： | 50% |
| 电源电压： | 7 V ~ 40 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 剪切带 (CT) |
| 其它名称： | NCV494BDR2GOSCT |
TL494, NCV494
ELECTRICAL CHARACTERISTICS (V CC = 15 V, C T = 0.01 m F, R T = 12 k W , unless otherwise noted.)
For typical values T A = 25 ° C, for min/max values T A is the operating ambient temperature range that applies, unless otherwise noted.
Characteristics
Symbol
Min
Typ
Max
Unit
ERROR AMPLIFIER SECTION
Input Offset Voltage (V O (Pin 3) = 2.5 V)
Input Offset Current (V O (Pin 3) = 2.5 V)
Input Bias Current (V O (Pin 3) = 2.5 V)
Input Common Mode Voltage Range (V CC = 40 V, T A = 25 ° C)
Open Loop Voltage Gain ( D V O = 3.0 V, V O = 0.5 V to 3.5 V, R L = 2.0 k W )
Unity?Gain Crossover Frequency (V O = 0.5 V to 3.5 V, R L = 2.0 k W )
Phase Margin at Unity?Gain (V O = 0.5 V to 3.5 V, R L = 2.0 k W )
Common Mode Rejection Ratio (V CC = 40 V)
Power Supply Rejection Ratio ( D V CC = 33 V, V O = 2.5 V, R L = 2.0 k W )
Output Sink Current (V O (Pin 3) = 0.7 V)
Output Source Current (V O (Pin 3) = 3.5 V)
V IO
I IO
I IB
V ICR
A VOL
f C?
f m
CMRR
PSRR
I O?
I O +
?
?
?
70
?
?
65
?
0.3
2.0
2.0
5.0
?0.1
?0.3 to V CC ?2.0
95
350
65
90
100
0.7
?4.0
10
250
?1.0
?
?
?
?
?
?
?
mV
nA
m A
V
dB
kHz
deg.
dB
dB
mA
mA
PWM COMPARATOR SECTION (Test Circuit Figure 11)
Input Threshold Voltage (Zero Duty Cycle)
Input Sink Current (V (Pin 3) = 0.7 V)
V TH
I I?
?
0.3
2.5
0.7
4.5
?
V
mA
DEADTIME CONTROL SECTION (Test Circuit Figure 11)
Input Bias Current (Pin 4) (V Pin 4 = 0 V to 5.25 V)
Maximum Duty Cycle, Each Output, Push?Pull Mode
(V Pin 4 = 0 V, C T = 0.01 m F, R T = 12 k W )
(V Pin 4 = 0 V, C T = 0.001 m F, R T = 30 k W )
I IB (DT)
DC max
?
45
?
?2.0
48
45
?10
50
50
m A
%
Input Threshold Voltage (Pin 4)
V th
V
(Zero Duty Cycle)
(Maximum Duty Cycle)
?
0
2.8
?
3.3
?
OSCILLATOR SECTION
Frequency (C T = 0.001 m F, R T = 30 k W )
Standard Deviation of Frequency* (C T = 0.001 m F, R T = 30 k W )
Frequency Change with Voltage (V CC = 7.0 V to 40 V, T A = 25 ° C)
Frequency Change with Temperature ( D T A = T low to T high )
(C T = 0.01 m F, R T = 12 k W )
f osc
s f osc
D f osc ( D V)
D f osc ( D T)
?
?
?
?
40
3.0
0.1
?
?
?
?
12
kHz
%
%
%
UNDERVOLTAGE LOCKOUT SECTION
Turn?On Threshold (V CC increasing, I ref = 1.0 mA)
V th
5.5
6.43
7.0
V
TOTAL DEVICE
Standby Supply Current (Pin 6 at V ref , All other inputs and outputs open)
I CC
mA
(V CC = 15 V)
(V CC = 40 V)
Average Supply Current
(C T = 0.01 m F, R T = 12 k W , V (Pin 4) = 2.0 V)
?
?
?
5.5
7.0
7.0
10
15
?
mA
(V CC = 15 V) (See Figure 12)
* Standard deviation is a measure of the statistical distribution about the mean as derived from the formula, s
N
S (X n ? X) 2
n=1
N?1
http://onsemi.com
3
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