900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




  Richtek Technology Electronic Components Datasheet  

RT9224 Datasheet

5-Bit Programmable Synchronous PWM Buck Converter Controller and Output Voltage Monitor

No Preview Available !

RT9224
5-Bit Programmable Synchronous PWM Buck Converter
Controller and Output Voltage Monitor
General Description
The RT9224 is a high speed switching controller designed
for use in synchronous DC/DC buck converter for modern
CPUs. The regulated output voltage is digitally
programmable from 1.3V to 3.5V by a 5-bit DAC which
provides initial accuracy of ±1%. The RT9224 drives two
external N-Channel MOSFETs, providing high efficiency
and eliminating the need for high cost P-Channel devices.
It senses the output current across the on-resistance of
the upper N-Channel MOSFET and provides an adjustable
current limit without external sense resistor.
RT9224 monitors the output voltage and provides the output
signal for power-good and over-voltage protection. The
switching controller drivers two N-MOSFETs at 200kHz
frequency and provides an optimal solution for size,
efficiency and cost in any application circuits. The high
switching frequency cooperating with a high speed error
amplifier maintains a fast response to the dynamic load of
modern CPUs.
Features
Compatible with HIP6004B
Simple Voltage-mode PWM Control with Buck
Rectification
±1% DAC Output Voltage Accuracy
5-Bit Digital-to-Analog Output Voltage Range from
1.3 V to 3.5V
Fast Transient Response and Excellent Output
Voltage Regulation
Fault Protection for Over-voltage and Over- Current
Power-Good Output Voltage Monitor
Fixed 200kHz Switching Frequency
Applications
Power Supply for Pentium, Pentium ProTM, Pentium IITM,
PowerPCTM, K6TM, 6x86TM, and AlphaTM Microprocessors
Low-voltage Distributed Power Supplies
High Power 5V to 1.3V~3.5V Switching Regulator
Ordering Information
RT9224
Package Type
S : SOP-20
Operating Temperature Range
C : Commercial Standard
P : Pb Free with Commercial Standard
Pin Configurations
(TOP VIEW)
VSEN
OCSET
SS
VID0
VID1
VID2
VID3
VID4
NC
FB
2
3
4
5
6
7
8
9
10
20 NC
19 OVP
18 VCC
17 LGATE
16 PGND
15 BOOT
14 UGATE
13 PHASE
12 PGOOD
11 GND
SOP-20
DS9224-05 March 2004
www.richtek.com
1


  Richtek Technology Electronic Components Datasheet  

RT9224 Datasheet

5-Bit Programmable Synchronous PWM Buck Converter Controller and Output Voltage Monitor

No Preview Available !

RT9224
Typical Application Circuit
VIN = 5V
L1
1uH
F1
CIN
5 x1000uF
2N6394
2K
2 x1uF
+12V
10
0.1uF
15V
0.1uF
SS 3
VSEN 1
VCC
18
OVP
19
Monitor
and
Protection
1000pF
2 OCSET 1K
12 PGOOD
OSC
VID0
VID1
VID2
VID3
VID4
4
5
6
7
D/A
8
FB 10
-
+
-
+
15 BOOT
14 UGATE
13 PHASE
17 LGATE
16 PGND
GND
Q1
L2
3uH
Q2
D2
COUT
9 x1000uF
4.99K
0.68uF
750K
+VO
Component Selection Notes:
COUT, CIN Each 1000µF 6.3W VDC, Sanyo MV-GX or Equivalent.
L2 Core: Micrometals T50-52B; Winding: 10 Turns of 16AWG.
L1 Core: Micrometals T50-52; Winding: 5 Turns of 18AWG.
D2 3A, 40V Schottky, Motorola MBR340 or Equivalent.
Q1, Q2 PHB83N03LT; PHB95N03LT
www.richtek.com
2
DS9224-05 March 2004


Part Number RT9224
Description 5-Bit Programmable Synchronous PWM Buck Converter Controller and Output Voltage Monitor
Maker Richtek Technology
PDF Download

RT9224 Datasheet PDF






Similar Datasheet

1 RT922 high output current dual operational amplifier
STMicroelectronics
2 RT9221 PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER
Richtek Technology
3 RT9221 Programmable Synchronous PWM Buck Converter
Richtek
4 RT9222 Programmable Synchronous PWM Buck Converter
Richtek
5 RT9223 5 BIT PROGRAMMABLE SYNCHRONOUS PWM BUCK CONVERTER CONTROLLER
Richtek Technology
6 RT9224 5-Bit Programmable Synchronous PWM Buck Converter Controller and Output Voltage Monitor
Richtek Technology
7 RT9224C VRM 9.0 Synchronous PWM Buck Converter Controller and Output Voltage Monitor
Richtek Technology
8 RT9224E VRM 8.5 Synchronous PWM Buck Converter Controller and Output Voltage Monitor
Richtek Technology
9 RT9226 PWM Step-down DC/DC Converter Controller
Richtek





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy