900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






Micrel Semiconductor

MIC2288 Datasheet Preview

MIC2288 Datasheet

1A 1.2MHz PWM Boost Converter

No Preview Available !

MIC2288
Micrel, Inc.
MIC2288
1A 1.2MHz PWM Boost Converter in
Thin SOT-23 and 2×2 MLF™
General Description
The MIC2288 is a 1.2MHz PWM, DC/DC boost switching
regulator available in low-profile Thin SOT-23 and
2mm × 2mm MLF™ package options. High power density is
achieved with the MIC2288’s internal 34V/1A switch, allow-
ing it to power large loads in a tiny footprint.
The MIC2288 implements a constant frequency, 1.2MHz
PWM, current mode control scheme with internal compensa-
tion that offers excellent transient response and output regu-
lation performance. The high frequency operation saves
board space by allowing small, low-profile, external compo-
nents. 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 SOT-23-5
package and a 2mm × 2mm MLF™-8 leadless package. The
2mm × 2mm MLF™-8 package option has an output over-
voltage protection feature.
The MIC2288 has a junction temperature range of –40°C to
+125°C.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
Features
• 2.5V to 10V input voltage range
• Output voltage adjustable to 34V
• Over 1A switch current
• 1.2MHz PWM operation
• Stable with ceramic capacitors
• High-efficiency
• <1% line and load regulation
• Low input and output ripple
• <1µA shutdown current
• UVLO
• Output overvoltage protection (MIC2288BML)
• Over temperature shutdown
• Thin SOT-23-5 package option
• 2mm × 2mm leadless MLF™-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
Typical Application
VIN
1-Cell
Li Ion
L1
10µH
C1
2.2µF
MIC2288BD5
5
VIN
1
SW
4 EN
FB 3
GND
2
VOUT
15V
R1
C2
R2 10µF
2mm × 2mm MLF™ Boost Regulator
15VOUT Efficiency
90
VIN = 4.2V
85
80
75 VIN = 3.2V VIN = 3.6V
70
65
600 0.05 0.1 0.15 0.2
LOAD (A)
MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc.
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
April 2005
1 M9999-042205




Micrel Semiconductor

MIC2288 Datasheet Preview

MIC2288 Datasheet

1A 1.2MHz PWM Boost Converter

No Preview Available !

MIC2288
Ordering Information
Part Number
MIC2288BD5
MIC2288YD5
MIC2288BML
MIC2288YML
Marking
Code
SHAA
SHAA
SJA
SJA
Output
Voltage
Adjustable
Adjustable
Adjustable
Adjustable
Overvoltage
Protection
34V
34V
Junction
Temp. Range
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
Package
Thin SOT-23-5
Thin SOT-23-5
2×2 MLF™-8
2×2 MLF™-8
Micrel, Inc.
Lead Finish
Standard
Lead Free
Standard
Lead Free
Pin Configuration
FB GND SW
321
45
EN VIN
TSOT-23-5 (D5)
OVP 1
VIN 2
EN 3
AGND 4
8 PGND
7 SW
6 FB
EP 5 NC
8-Pin MLF™ (ML)
(Top View)
Fused Lead Frame
Pin Description
Pin Number
TSOT-23-5
1
2
3
Pin Number
2×2 MLF™-8
7
6
43
52
1
5
4
8
EP
Pin Name
SW
GND
FB
EN
VIN
OVP
NC
AGND
PGND
GND
Pin Function
Switch Node (Input): Internal power Bipolar collector.
Ground (Return): Ground.
Feedback (Input): 1.24V output voltage sense node.
VOUT = 1.24V 1+ RR21
Enable (Input): Logic high enables regulator. Logic low shuts down regulator.
Supply (Input): 2.5V to 10V input voltage.
Output Overvoltage Protection (Input): Tie this pin to VOUT to clamp the
output voltage to 34V maximum in fault conditions. Tie this pin to ground if
OVP function is not required.
No Connect: No internal connection to die.
Analog ground.
Power ground.
Exposed backside pad.
M9999-042205
2
April 2005


Part Number MIC2288
Description 1A 1.2MHz PWM Boost Converter
Maker Micrel Semiconductor
Total Page 11 Pages
PDF Download

MIC2288 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 MIC2282 Single-Cell Ultra Low EMI Boost LED Driver
Micrel Semiconductor
2 MIC2285A 8MHz PWM Synchronous Buck Regulator
MICREL
3 MIC2287 1.2MHz PWM White LED Driver
Micrel Semiconductor
4 MIC2287C 1.2MHz PWM White LED Driver
Micrel Semiconductor
5 MIC2288 1A 1.2MHz PWM Boost Converter
Micrel Semiconductor
6 MIC2288 1A 1.2 MHz PWM Boost Converter
Microchip
7 MIC2289 2mm 2mm White LED Driver with Internal Schottky Diode and OVP
Micrel Semiconductor
8 MIC2289C White LED Driver Internal Schottky Diode and OVP
MICREL





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy