ap2002sla ETC-unknow, ap2002sla Datasheet

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ap2002sla

Manufacturer Part Number
ap2002sla
Description
Synchronous Pwm Controller
Manufacturer
ETC-unknow
Datasheet
1.AP2002SLA.pdf (7 pages)
Synchronous PWM Controller
- Single or Dual Supply Application
- 0.8V + 1.0% Voltage Reference.
- Fast transient response.
- Synchronous operation for high efficiency (95%)
- On-chip power good, OVP protect.
- Small size with minimum external components
- Soft Start and enable functions
- Industrial temperature range
- Under Voltage Lockout function
- SOP-14L package
- Microprocessor core supply
- Low cost synchronous applications
- Voltage Regulator Modules (VRM)
- DDR termination supplies
- Networking power supplies
- Sequenced power supplies
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.
S: SOP-14L
PWRGD
OCSET
PHASE
Package
Applications
Pin Assignment
Ordering Information
PGND
DRVH
Features
VCC
OVP
AP2002 X
1
2
3
4
5
6
7
(Top View)
Blank : Normal
L : Lead Free Package
SOP-14L
AP2002
Lead Free
14
13
12
11
10
9
8
X
SS/SHDN
BSTH
BSTL
DRVL
GND
SENSE
COMP
X
Blank : Tube
A : Taping
Packing
1/7
The AP2002 is a low-cost, full featured, and
synchronous voltage-mode controller designed for
use in single ended power supply applications
where efficiency is of primary concern.
synchronous operation allows the elimination of
heat sinks in many applications. The AP2002 is
ideal for implementing DC/DC converters that is
needed for the power advanced microprocessors in
low
applications where efficiency is important. Internal
level-shift, high-side drive circuitry, and preset
shoot-thru control, allows the use of inexpensive
N-channel power switches.
AP2002 features include temperature compensated
voltage reference, an internal 200Khz virtual
frequency
protection, soft-start function and current sense
comparator circuitry.
shutdown, and over voltage protection are also
provided by AP2002.
SS/ SHDN
PWRGD
OCSET
PHASE
SENSE
COMP
DRVH
PGND
Name
BSTH
DRVL
BSTL
GND
VCC
OVP
General Description
Pin Descriptions
cost
systems,
oscillator,
Chip supply voltage
Logic high indicates correct output
voltage (open drain output)
Over voltage protection
Sets the converter over-current trip
point
Input from the phase node between
the MOSFETs
High side driver output
Power ground
Low side driver output
Bootstrap, low side driver
Voltage sense input
Soft start, a capacitor to ground sets
the slow start time
Signal ground
Bootstrap, high side driver
Compensation pin
or
under
Power good signaling,
Description
in
distributed
voltage
AP2002
Rev. 0.2 Apr 14, 2004
lockout
power
This

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ap2002sla Summary of contents

Page 1

Synchronous PWM Controller Features - Single or Dual Supply Application - 0.8V + 1.0% Voltage Reference. - Fast transient response. - Synchronous operation for high efficiency (95%) - On-chip power good, OVP protect. - Small size with minimum external components ...

Page 2

Synchronous PWM Controller Block Diagram VCC - PWRGD + - + Vcc - + OVP COMP SENSE Vbg Vcc 0.5V 10uA SS/SHDN 2uA GND Absolute Maximum Ratings Symbol V VCC, BSTL to GND IN PGND to GND V PHASE to ...

Page 3

Synchronous PWM Controller Electrical Characteristics Unless specified 4.75V to 12.6V; GND = PGND = 0V Symbol Parameter Power Supply V Supply Voltage CC I Supply Current CC ∆V Line Regulation LINE Error Amplifier A ...

Page 4

Synchronous PWM Controller Typical Application Circuit (1) +12V + 0 10k C2 1k 0.1 1 VCC 2 PWRGD SS/SHDN PWRGD OVP OVP 4 OCSET 5 PHASE 6 DRVH 7 PGND (2) +5V ...

Page 5

Synchronous PWM Controller Function Description Synchronous Buck Converter Primary V power is provided by a synchronous, CORE voltage-mode pulse width modulated controller. This section has all the features required to build a high efficiency synchronous buck converter, including “Power Good” ...

Page 6

Synchronous PWM Controller Function Description Hiccup Mode During power up, the SS/ SHDN pin is internally pulled low until V reaches the under-voltage CC lockout level of 4.2V. Once V has reached 4.2V, CC the SS/ SHDN pin is released ...

Page 7

Synchronous PWM Controller Package Information (1) Package Type: SOP-14L Pin 1 indent o 7 (4x) y Dimensions In Millimeters Symbol Min. A 1. 0.33 C 0.19 D 8.53 E 5. ...

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