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参数资料
| 型号： | UC2842P |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封装： | PLASTIC, DIP-8 |
| 文件页数： | 21/25页 |
| 文件大小： | 745K |
| 代理商： | UC2842P |
www.ti.com
ERROR AMP CONFIGURATION
_
+
2.5 V
2
1
VFB
COMP
ZF
ZI
0.5 mA
UNDER-VOLTAGE LOCKOUT
VCC
<17 mA
<1 mA
VOFF
VON
VCC
7
VCC
ON/OFF Command
to REST of IC
UC1842
UC1844
UC1843
UC1845
VON
VOFF
16 V
10 V
8.4 V
7.6 V
CURRENT SENSE CIRCUIT
Peak Current (IS) is Determined By The Formula
ERROR
AMP
2R
R
1 V
5
COMP
CURRENT
SENSE
GND
IS
R
C
RS
CURRENT
SENSE
COMPARATOR
,1.0 V
RS
ISMAX
1
3
5
SLUS223C – APRIL 1997 – REVISED JUNE 2007
Error amp can source or sink up to 0.5 mA.
During under-voltage lock-out, the output drive is biased to sink minor amounts of current. Pin 6 should be
shunted to ground with a bleeder resistor to prevent activating the power switch with extraneous leakage
currents.
A small RC filter may be required to suppress switch transients.
5
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| UC2842Q | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Current-Mode SMPS Controller |
| UC2842QTR | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Current-Mode SMPS Controller |
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| UC2843 | 制造商:TI 制造商全称:Texas Instruments 功能描述:Current Mode PWM Controller |
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