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FAN2103 반도체 회로 부품 판매점

24V Input Integrated Synchronous Buck Regulator



Fairchild Semiconductor 로고
Fairchild Semiconductor
FAN2103 데이터시트, 핀배열, 회로
December 2007
www.datasheet4u.com
FAN2103 — TinyBuck™
3A, 24V Input Integrated Synchronous Buck Regulator
Features
ƒ Over 95% efficiency
ƒ Internal power MOSFETs:
High-side RDS(ON) = 31mΩ
Low-side RDS(ON) = 23mΩ
ƒ Integrated low-side Schottky diode
ƒ Programmable frequency operation up to 750KHz
ƒ Power-good signal
ƒ Wide input range: 3.0V to 24V
ƒ Output voltage range: 0.8V to 90%VIN
ƒ Input under-voltage lockout (UVLO)
ƒ Programmable over-current protection
ƒ Under-voltage, over-voltage, and thermal protection
ƒ Selectable light-load power-saving mode
ƒ 5x6mm, 25-pin, 3-pad MLP
Applications
ƒ Thin and light Notebook PCs
ƒ Graphics cards
ƒ Battery-powered equipment
ƒ Set-top box
ƒ Point-of-load regulation
Description
The FAN2103 TinyBuck™ is an easy-to-use, cost- and
space-efficient, synchronous buck solution. It enables
designers to solve high-current requirements in a small
area with minimal external components.
External programming of clock frequency, current limit,
and loop response allows for optimization and flexibility
selecting output filter components and transient response.
The summing current mode modulator uses lossless
current sensing for current feedback and over-current,
and includes voltage feedforward.
Fairchild’s advanced BiCMOS power process,
combined with a thermally efficient MLP package,
provides low-RDS(ON), internal MOSFETs, and the ability
to dissipate high power in a small package.
Under-voltage, thermal shutdown, and power-good are
blanked at start-up, but protect the device from damage
during fault conditions.
Related Application Notes
ƒ AN-5067 – PCB land pattern design and surface
mount guidelines for MLP packages
Ordering Information
Part Number
FAN2103MPX
FAN2103EMPX
Operating
Temperature Range
-10°C to 85°C
-40°C to 85°C
Package
Packing Method
25-Pin Molded Leadless Package (MLP) 5x6mm Tape and Reel
25-Pin Molded Leadless Package (MLP) 5x6mm Tape and Reel
All packages are lead free per JEDEC: J-STD-020B standard.
© 2007 Fairchild Semiconductor Corporation
FAN2103 Rev. 1.0.3
www.fairchildsemi.com


FAN2103 데이터시트, 핀배열, 회로
Typical Application Diagram
www.datasheRetR4uA.McPom
+5V
C4
VCC 15
RILIM
RAMP 25
PGOOD 13
EN 14
ILIM 17
RT R(T) 18
C2
C1
R2
COMP 20
AGND 16
Q1
Q2
PWM
MODULATOR
P2 VIN
1 BOOT
CHF
VIN
CIN
P1 SW
CBOOT
L
VOUT
P3 PGND
24 PWM#
19 FB
RBIAS
COUT
R1
C3
R3
Figure 1. Typical Application
Block Diagram
© 2007 Fairchild Semiconductor Corporation
FAN2103 Rev. 1.0.3
Figure 2. Block Diagram
2
www.fairchildsemi.com




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FAN2103 regulator

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