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参数资料
| 型号： | TEA1733P/N1,112 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 14/21页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR SMPS GREEN OVP 8-DIP |
| 标准包装： | 50 |
| 系列： | GreenChip™ |
| 输出隔离： | 隔离 |
| 频率范围： | 62kHz ~ 71kHz |
| 输入电压： | 12 V ~ 30 V |
| 输出电压： | 9 V ~ 12 V |
| 功率（瓦特）： | 500mW |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-DIP |
| 包装： | 管件 |
| 相关产品： | 732-2243-ND - TRANS FLYBACK NXP TEA1733 4.0MH 732-2242-ND - TRANS FLYBACK NXP TEA1733 2.2MH |
NXP Semiconductors
TEA1733P
GreenChip SMPS control IC
Table 5. Characteristics …continued
T amb = 25 ? C; V CC = 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into
the IC; unless otherwise specified.
Symbol
R start(soft)
Parameter
soft start resistance
Conditions
Min
12
Typ
-
Max
-
Unit
k ?
Driver (pin DRIVER)
I source(DRIVER)
source current on pin
V DRIVER = 2 V
-
? 0.3
? 0.25
A
DRIVER
I sink(DRIVER)
V O(DRIVER)max
sink current on pin
DRIVER
maximum output voltage
V DRIVER = 2 V
V DRIVER = 10 V
0.25
0.6
9
0.3
0.75
10.5
-
-
12
A
A
V
on pin DRIVER
Temperature protection
T pl(IC)
IC protection level
130
140
150
? C
temperature
[1]
The clamp voltage on the PROTECT pin is lowered when the IC is in power-down (latched or restart protection).
11. Application information
A power supply with the TEA1733P is a flyback converter operating in Continuous
conduction mode (See Figure 10 ).
Capacitor C5 buffers the IC supply voltage, which is powered via resistor R3 at start-up
and via the auxiliary winding during normal operation. Sense resistor R9 converts the
current through the MOSFET S1 into a voltage on pin ISENSE. The value of R9 defines
the maximum primary peak current on MOSFET S1. Resistor R7 reduces the peak
current to capacitor C5.
In the example shown in Figure 10 , the PROTECT pin is used for OVP and OTP. The
OVP level is set by diode Z1 to V CC = 25.8 V. The OTP level is set by Negative
Temperature Coefficient (NTC) resistor R4. The VINSENSE pin is used for mains voltage
detection and resistors R1 and R2 set the start voltage to about 80 V (AC). The overpower
protection time is defined by capacitor C4 is set at 60 ms.
The restart time is defined by capacitor C4 and resistor R8 at 0.5 s.
Resistor R6 and capacitor C6 define the soft start time. Resistor R5 prevents the soft start
capacitor C6 from being charged during normal operation caused by negative voltage
spikes across the current sense resistor R9.
Capacitor C3 reduces noise on the CTRL pin.
See the application note for more information ( Ref. 1 ).
TEA1733P
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 15 July 2013
? NXP B.V. 2013. All rights reserved.
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