参数资料
| 型号： | NCP4326DR2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 9/29页 |
| 文件大小： | 0K |
| 描述： | IC SECONDARY CTLR SW PS 16-SOIC |
| 产品变化通告： | Discontinuation 30/Jun/2006 |
| 标准包装： | 2,500 |
| 应用： | 次级控制器，准谐振切换模式电源 |
| 输入电压： | 15V |
| 输出数： | 3 |
| 工作温度： | 0°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
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NCP4326
ELECTRICAL CHARACTERISTICS (For typical values T J = 25 ° C, for min/max values T J = 0 ° C to +105 ° C, Vcc = 12 V unless
otherwise noted.)
Characteristic
Pin
Symbol
Min
Typ
Max
Unit
Shunt Regulator
Voltage Feedback Input @ T J = 25 ° C (Note 8)
* Voltage follower measurement to reach 1% accuracy
Input Bias Current (V FB = 1.30 V)
Open Loop Voltage Gain (V CPm = 1.0 V to 5.0 V)
Unity Gain Bandwidth (T J = 25 ° C)
Power Supply Rejection Ratio
(Vcc = 10 V to 15 V, Frequency range 120 Hz)
Output Current ? Sink Current (V CPm = 1.1 V, V FB = 1.45 V)
Output Voltage Swing ? Low State (R L = 15 k to Vcc, V FB = 1.45 V)
9
9
9
9
9
8
8
V FB
I IB
A VOL
BW
PSRR
I sink
V OL
1.241
?
?
?
?
12
?
1.253
? 0.1
90
3.3
55
60
0.7
1.266
?
?
?
?
?
1.1
V
μ A
dB
MHz
dB
mA
V
Ct Pin
Minimum Voltage on Ct pin
Maximum Voltage on Ct pin when Ct pin is floating
Maximum Voltage on Ct pin with External Sink Current @ 500 m A
Internal Current Source @ VCt = 2.5 V (Note 9)
Discharge time for Ct capacitor @ Ct = 2.7 nF when applying falling
edge on Sync pin to (Vctmin*1.05) (Figure 7)
6
6
6
6
6
V CT_min
V Ct_max1
V Ct_max2
I Ct
T Ct_disch
1.4
?
?
450
?
1.6
4.0
4.2
500
230
?
?
?
700
500
V
V
V
m A
ns
Undervoltage Lockout
Startup Threshold
Hysteresis
12
12
V TH
Hyste
4.8
?
5.3
0.5
6.0
?
V
V
IC Current Consumption
Power Supply Current in Standby Mode
Vcc = 12 V, STBY = GND, EN1 = EN2 = OPEN (Note 11)
Power Supply Current in Working Mode
Vcc= 12 V, STBY = EN1 = EN2 = OPEN
12
12
I stdby
I cc
?
?
2.2
17
3.0
22
mA
mA
8. See characterization curves for Voltage Reference vs. Temperature.
9. See characterization curve for Charging Current vs. Vcc.
10. When the Vcc < UVLO level, the outputs are automatically disabled.
11. During the standby mode the outputs drivers are disabled but the shunt regulator is kept fully functional in order to supply the primary
feedback.
http://onsemi.com
9
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