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參數(shù)資料
| 型號： | NCP4326DR2 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 模擬信號調理 |
| 英文描述： | Secondary Controller for Multi−Output Quasi−Resonant Switchmode Power Supplies |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁數(shù)： | 9/30頁 |
| 文件大?。?/td> | 432K |
| 代理商： | NCP4326DR2 |
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NCP4326
http://onsemi.com
9
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
Unit
Max
Typ
Min
Symbol
Pin
Shunt Regulator
Voltage Feedback Input @ T
= 25
°
C (Note 8)
* Voltage follower measurement to reach 1% accuracy
9
V
FB
1.241
1.253
1.266
V
Input Bias Current (V
FB
= 1.30 V)
9
I
IB
0.1
μ
A
Open Loop Voltage Gain (V
CPm
= 1.0 V to 5.0 V)
9
A
VOL
90
dB
Unity Gain Bandwidth (T
J
= 25
°
C)
9
BW
3.3
MHz
Power Supply Rejection Ratio
(Vcc = 10 V to 15 V, Frequency range 120 Hz)
9
PSRR
55
dB
Output Current Sink Current (V
CPm
= 1.1 V, V
FB
= 1.45 V)
8
I
sink
12
60
mA
Output Voltage Swing Low State (R
L
= 15 k to Vcc, V
FB
= 1.45 V)
8
V
OL
0.7
1.1
V
Ct Pin
Minimum Voltage on Ct pin
6
V
CT_min
1.4
1.6
V
Maximum Voltage on Ct pin when Ct pin is floating
6
V
Ct_max1
4.0
V
Maximum Voltage on Ct pin with External Sink Current @ 500 A
6
V
Ct_max2
4.2
V
Internal Current Source @ VCt = 2.5 V (Note 9)
6
I
Ct
450
500
700
A
Discharge time for Ct capacitor @ Ct = 2.7 nF when applying falling
edge on Sync pin to (Vctmin*1.05) (Figure 7)
6
T
Ct_disch
230
500
ns
Undervoltage Lockout
Startup Threshold
12
V
TH
4.8
5.3
6.0
V
Hysteresis
12
Hyste
0.5
V
IC Current Consumption
Power Supply Current in Standby Mode
Vcc = 12 V, STBY = GND, EN1 = EN2 = OPEN (Note 11)
12
I
stdby
2.2
3.0
mA
Power Supply Current in Working Mode
Vcc= 12 V, STBY = EN1 = EN2 = OPEN
12
I
cc
17
22
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.
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