1 ch DC/DC Converter IC Built-in Switching FET & POWERGOOD function - Fujitsu Component
Description
FUJITSU MICROELECTRONICS DATA SHEET
DS04-27245-2E
ASSP for Power Management Applications
1 ch DC/DC Converter IC Built-in Switching FET & POWERGOOD function, PFM/PWM Synchronous Rectification, and Down Conversion Support
MB39C006A
■ DESCRIPTION
The MB39C006A is a current mode type 1-channel DC/DC converter IC built-in switching FET, synchronous rectification, and down conversion support.
The device is integrated with a switching FET, oscillator, error amplifier, PFM/PWM control circuit, reference voltage source, and POWERGOOD circuit.
External inductor and decoupling capacitor are needed only for the external component.
MB39C006A is small, achieve a highly effective DC/DC converter in the full load range, this is suitable as the built-in 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) Output current (DC/DC) : 800 mA (Max) Input voltage range : 2.
5 V to 5.
5 V Operating frequency : 2.
0/3.
2 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.
20 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 : SON10
■ APPLICATIONS
• • • • • • Flash ROMs MP3 players Electronic dictionary devices Surveillance cameras Portable GPS navigators Mobile phones etc.
Copyright©2008-2009 FUJITSU MICROELECTRONICS LIMITED All rights reserved 2009.
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www.
DataSheet.
in
MB39C006A
■ PIN ASSIGNMENT
(Top View)
VDD OUT MODE VREFIN FSEL
10
9
8
7
6
1
2
3
4
5
LX
GND
CTL
VREF
POWERGOOD
(LCC-10P-M04)
■ PIN DESCRIPTIONS
Pin No 1 2 3 4 5 6 7 8 9 10 Pin name LX GND CTL VREF POWERGOOD FSEL VREFIN MODE OUT VDD I/O O ⎯ I O O I I I I ⎯ Ground ...
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