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  Microchip Technology Semiconductor Electronic Components Datasheet  

MIC2288 Datasheet

1A 1.2 MHz PWM Boost Converter

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MIC2288
1A, 1.2 MHz PWM Boost Converter in Thin SOT23 and DFN Packages
Features
• 2.5V to 10V Input Voltage Range
• Output Voltage Adjustable to 34V
• Over 1A Switch Current
• 1.2 MHz PWM Operation
• Stable with Ceramic Capacitors
• <1% Line and Load Regulation
• Low Output Voltage Ripple
• <1 µA Shutdown Current
• Undervoltage Lockout
• Output Overvoltage Protection (MIC2288YML)
• Overtemperature Shutdown
• Thin SOT23-5 Package Option
• 2 mm x 2 mm leadless DFN-8 Package Option
• –40°C to +125°C Junction Temperature Range
Applications
• Organic EL Power Supply
• TFT-LCD Bias Supply
• 12V Supply for DSL Applications
• Multi-Output DC/DC Converters
• Positive and Negative Output Regulators
• SEPIC Converters
Package Types
MIC2288
DFN-8 (ML)
(Top View)
OVP 1
VIN 2
EN 3
AGND 4
8 PGND
7 SW
6 FB
EP 5 NC
General Description
The MIC2288 is a 1.2 MHz PWM, DC/DC boost
switching regulator available in low-profile Thin SOT23
and 2 mm x 2 mm DFN package options. High power
density is achieved with the MIC2288’s internal 34V/1A
switch, allowing it to power large loads in a tiny
footprint.
The MIC2288 implements a constant frequency,
1.2 MHz PWM, current mode control scheme with
internal compensation that offers excellent transient
response and output regulation performance. The high
frequency operation saves board space by allowing
small, low-profile, external components. The fixed
frequency PWM topology also reduces spurious
switching noise and ripple to the input power source.
The MIC2288 is available in a low-profile Thin SOT23-5
package and a 2 mm x 2 mm DFN-8 leadless package.
The DFN package option has an output overvoltage
protection feature.
The MIC2288 has a junction temperature range of
–40°C to +125°C.
MIC2288
Thin SOT23-5 (D5)
(Top View)
FB GND SW
321
45
EN VIN
2018 Microchip Technology Inc.
DS20006034B-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

MIC2288 Datasheet

1A 1.2 MHz PWM Boost Converter

No Preview Available !

MIC2288
Typical Application Circuit
VIN
1-Cell
Li Ion
C1
2.2μF
L1
10μH
MIC2288YD5
5
VIN
1
SW
4 EN
FB 3
GND
2
VOUT
15V
R1
C2
R2 10μF
Functional Block Diagram
VIN FB OVP*
EN
OVP*
VREF
1.24V
gm
1.2MHz
Oscillator
*OVP available on DFN package option only.
PWM
Generator
Σ CA
Ramp
Generator
SW
GND
DS20006034B-page 2
2018 Microchip Technology Inc.


Part Number MIC2288
Description 1A 1.2 MHz PWM Boost Converter
Maker Microchip
Total Page 24 Pages
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