参数资料
| 型号： | NCP4326DR2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 7/29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
Drive Output (Note 1)
Output Voltage Rise Time (C L = 1.0 nF, T J = 25 ° C)
Output Voltage Fall Time (C L = 1.0 nF, T J = 25 ° C)
11, 13
11, 13
t r1, 2
t f1, 2
?
?
60
40
100
100
ns
ns
Output Voltage Low State @ Vcc = 15 V
(Isink = 250 mA)
(Isink = 20 mA)
11, 13
V OL1, 2
?
?
1.5
1.0
2.2
1.5
V
Output Voltage Low State with UVLO activated @ Vcc = 4.0 V
(Isink = 1.0 mA) (Note 1)
11, 13
V OL_UVLO1, 2
?
0.5
1.0
V
Output Voltage High State @ Vcc = 15 V
(Isource = 250 mA)
(Isource = 20 mA)
11, 13
V OH1, 2
11
12
13.4
13.5
?
?
V
Standby Pin
Input Threshold Voltage (V STBY increasing)
Hysteresis (V STBY decreasing)
Standby Propagation Delay when the Standby Mode is activated
with 1 nF connected to DRVx pin and with V CPx > 4.0 V (Figure 4)
Standby Propagation Delay when the Standby Mode is released,
ENx pin is floating, V CPx > 4.0 V and with 1.0 nF connected to DRVx
pin (Figure 4)
Pullup Resistor Value
10
10
10
10
10
V th
V H
T stby_on
T stby_off
R pullup
?
?
?
?
?
2.5
600
550
1.0
40
?
?
?
?
?
V
mV
ns
m s
k W
Enable/Soft ? Start Pin
Enable Soft ? Start Mode or Disable Driver Mode Threshold
(Note 2, Figure 5)
Maximum Voltage on ENx pin ending Soft ? Start and Enable the
Regulation Mode (Figure 5)
Voltage on ENx pin when ENx is floating
Voltage on ENx pin with External Sink Current @ 500 m A
Internal Current Source when V ENX = 2.5 V (Note 3)
Turn ON Propagation Delay in Soft ? Start Mode (Note 4) when
applying an external falling edge on Flux pin from 100 mV to 0 V @
V ENX = 1.0 V, V CPx = 5.0 V and 1.0 nF connected to DRVx pin.
(Timing definition see Figure 6)
Turn OFF Propagation Delay in Soft ? Start Mode (Note 4) when
applying an external rising edge on Flux pin from 0 V to 100 mV @
V ENX = 1.0 V, V CPx = 5.0 V and 1.0 nF connected to DRVx pin.
(Timing definition see Figure 6)
Discharge time when the controller is placed in Standby or when the
Vcc is removed @ C ENX = 330 nF from 90% of V EN_max1 to
V ENX_TH1 (Figure 1)
3, 16
3, 16
3, 16
3, 16
3, 16
3, 14 and 11
or
16, 14 and 13
3, 16
3, 16
V ENX_TH1
V ENX_TH2
V ENX_max1
V ENX_max2
I ENX
T SS_ON
T SS_OFF
T stby_disch
0.5
?
?
?
120
?
?
?
0.75
4.5
5.0
5.1
160
450
450
1.0
1.0
4.8
?
?
220
800
800
?
V
V
V
V
m A
ns
ns
ms
1.
2.
3.
4.
The output drivers are kept OFF when the Vcc < UVLO level.
Below the V ENX_TH1 threshold the driver is disabled and above this value the soft ? start duty cycle generation is allowed.
See characterization curve for charging current versus Vcc and V ENX .
Soft ? Start mode operation when the V CPx pin = 5.0 V (or when the controlled output voltage is not yet in regulation).
http://onsemi.com
7
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