LP6229 Datasheet, PDF (1/6 Pages) Lowpower Semiconductor inc – Output to Input Disconnect at Shutdown Mode

Preliminary Datasheet
High Efficiency Boost DC/DC Convertor
LP6229
General Description
The LP6229 is a current mode boost DC-DC
converter. Its PWM circuitry with built-in
0.3Ω,24V,1.5A Current power MOSFET makes this
converter highly power efficiently. Selectable high
switching frequency allows faster loop response and
easy filtering with a low noise output. The
non-inverting input its error amplifier is connected
to an internal 0.6V precision reference voltage.
Soft-Start time can be programmed with an external
capacitor, which sets the input current ramp rate.
Current mode control and external compensation
network make it easy and flexible to stabilize the
system.
Ordering Information
LP6229 - □ □ □
F: Pb-Free
Package Type
B6: SOT23-6
Typical Application Circuit
Vin
Vout
2.2uH
C1
22uF
1 _Vin
10uF
R1
22pF
30K
FB ⁶
5 _EN
NC ³
R2
10K
LP6229
Features
Up to 94% efficiency　
Output to Input Disconnect at Shutdown Mode
Shut-down current:<1uA 　
Output voltage Up to 28V
Internal Compensation, Soft-start
1.1MHz fixed frequency switching
High switch on current:1.5A/30V
Available in sot23-6 Package 　
Applications
Battery products
Host Products
Panel
Pin Configurations
6
5
4
LP6229B6F
1
2
3
Marking Information
Please see website:www.lowpowersemi.com.
LP6229 –00 Version 1.0 Datasheet Jul.-2013
www.lowpowersemi.com - -
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