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AP2004

Anachip
Part Number AP2004
Manufacturer Anachip
Description PWM Buck Controller
Published Aug 15, 2015
Detailed Description PWM Buck Controller „ Features - PWM Buck Control Circuitry - Operating voltage can be up to 27V - Under voltage Lockout...
Datasheet PDF File AP2004 PDF File

AP2004
AP2004

Overview
PWM Buck Controller „ Features - PWM Buck Control Circuitry - Operating voltage can be up to 27V - Under voltage Lockout (UVLO) Protection - Short Circuit Protection (SCP) - Soft-start circuit - Variable Oscillator Frequency -- 300Khz Max - 1.
25V voltage reference Output - 8-pin PDIP and SOP packages „ Applications - Backlight inverter - LCD Monitor - XDROM, XDSL Product - DC/DC converters in computers, etc.
„ Pin Assignment ( Top View ) OUT VCC COMP FB 1 2 3 4 8 GND 7 CT 6 SS 5 SCP PDIP/SOP „ Ordering Information AP2004 „ General Description The AP2004 integrates Pulse-Width-Modulation (PWM) control circuit into a single chip, mainly designs for power-supply regulator.
All the functions include an on-chip 1.
25V reference output, an error amplifier, an adjustable oscillator, a soft-start, UVLO, SCP circuitry, and a push-pull output circuit.
Switching frequency is adjustable by trimming CT.
During low VCC situation, the UVLO makes sure that the outputs are off until the internal circuit operates normally.
„ Pin Descriptions Name CT FB SS COMP OUT GND VCC SCP Description Timing Capacitor Voltage Feedback Soft-Start.
Feedback Loop Compensation PWM Output Ground Supply Voltage Short Circuit Protection AP2004 X X X Package Lead Free Packing N: PDIP-8L Blank : Normal Blank : Tube S: SOP-8L L : Lead Free Package A : Taping This datasheet contains new product information.
Anachip Corp.
reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product.
No rights under any patent accompany the sale of the product.
Rev.
0.
4 Arpr 6, 2004 1/8 PWM Buck Controller „ Block Diagram VCC SS CT FB COMP 1.
25V Bandgap Reference 2.
5V Internal use UVLO Iss Error Amplifier Oscillator MAX.
500KHz PWM Amplifier + + - 1.
5V + 0.
7V + AP2004 VCC OUT SCP GND „ Absolute Maximum Ratings Symbol VCC VI VO ISOURCE ISINK TOP TST TLEAD Parameter Supply voltage Amplifier input voltage Collector output...


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