2 ch DC/DC Converter IC Built-in Switching FET - Fujitsu Component
Description
FUJITSU MICROELECTRONICS DATA SHEET
DS04-27254-2E
ASSP for Power Management Applications
2 ch DC/DC Converter IC Built-in Switching FET, Synchronous Rectification, and Down Conversion Support
MB39C015
■ DESCRIPTION
The MB39C015 is a current mode type 2-channel DC/DC converter IC built-in voltage detection, synchronous rectifier, and down conversion support.
The device is integrated with a switching FET, oscillator, error amplifier, PWM control circuit, reference voltage source, and voltage detection circuit.
External inductor and decoupling capacitor are needed only for the external component.
As combining with external parts enables a DC/DC converter with a compact and high load response characteristic, this is suitable as the built-in power supply for such as mobile phone/PDA, DVDs, and HDDs.
■ FEATURES
• • • • • • • • • • • • High efficiency : 96% (Max) Output current (DC/DC) : 800 mA/ch (Max) Input voltage range : 2.
5 V to 5.
5 V Operating frequency : 2.
0 MHz (Typ) No flyback diode needed Low dropout operation : For 100% on duty Built-in high-precision reference voltage generator : 1.
30 V ± 2% Consumption current in shutdown mode : 1 µA or less Built-in switching FET : P-ch MOS 0.
3 Ω (Typ) N-ch MOS 0.
2 Ω (Typ) High speed for input and load transient response in the current mode Over temperature protection Packaged in a compact package : QFN-24
■ APPLICATIONS
• • • • • • • • • Flash ROMs MP3 players Electronic dictionary devices Surveillance cameras Portable GPS navigators DVD drives IP phones Network hubs Mobile phones etc.
Copyright©2008 FUJITSU MICROELECTRONICS LIMITED All rights reserved 2008.
8
www.
DataSheet.
in
MB39C015
■ PIN ASSIGNMENT
(Top View)
LX2 DGND2 DGND2 DGND1 DGND1 LX1 18 DVDD2 19 17 16 15 14 13 12 DVDD1
DVDD2
20
11
DVDD1
OUT2
21
10
OUT1
MODE2
22
9
MODE1
VREFIN2
23
8
VREFIN1
XPOR
24 1 CTLP 2 CTL2 3 CTL1 4 AGND 5 AVDD 6 VREF
7
VDET
(LCC-24P-M09)
2
www.
DataSheet.
in
DS04-27254-2E
MB39C015
■ PIN DESCRIPTIONS
Pin No.
1 2/3...
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