2 ch DC/DC Converter IC Built-in Switching FET & voltage detection function - Fujitsu Component
Description
FUJITSU MICROELECTRONICS DATA SHEET
DS04-27246-2E
ASSP for Power Management Applications
2 ch DC/DC Converter IC Built-in Switching FET & voltage detection function, PFM/PWM Synchronous Rectification, and Down Conversion Support
MB39C007
■ DESCRIPTION
The MB39C007 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, PFM/PWM control circuit, reference voltage source, and voltage detection circuit.
External inductor and decoupling capacitor are needed only for the external component.
MB39C007 is small, achieve a highly effective DC/DC converter in the full load range, this is suitable as the builtin power supply for handheld equipment such as mobile phone/PDA, DVDs, and HDDs.
■ FEATURES
• • • • • • • • • • • • • • High efficiency : 96% (Max) Low current consumption : 30 μA (At PFM/ch) Output current : 800 mA/ch (Max) Input voltage range : 2.
5 V to 5.
5 V Operating frequency : 2.
0 MHz (Typ) Built-in PWM operation fixed function 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©2008-2009 FUJITSU MICROELECTRONICS LIMITED All rights reserved 2009.
9
www.
DataSheet.
in
MB39C007
■ 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...
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