MIC2660
Micrel
MIC2660
IttyBitty鈩?Charge Pump
Preliminary Information
General Description
The MIC2660 IttyBitty鈩?charge pump functions as a low-
current, step-up converter where conventional inductor based,
dc-to-dc converters are too complex and expensive. This
device features a complete, self-contained charge pump in a
tiny 5-lead SOT-23-5 package.
The MIC2660 is powered from a 3V to 5V nominal supply and
produces nominally 5V to 9V as a function of the input
voltage. The output is unregulated and follows a load-line
type function.
The MIC2660 can be used with or without external compo-
nents. When used with two noncritical external capacitors, a
3V input will produce 5V at 3.8mA. With no external compo-
nents, a 3V input will produce 5V at 2.5mA.
The MIC2660 charge pump consists of an approximately
18MHz oscillator and a voltage tripler.
The MIC2660 is available in the SOT-23-5 package and
is rated for 鈥?0擄C to +85擄C ambient temperature range.
Features
鈥?3V input produces approx. 5V unregulated output*
3.8mA with 1碌F external output capacitor
2.5mA without external capacitor
鈥?5V input produces approx. 9V unregulated output*
4.5mA output without external capacitor
鈥?CMOS-logic compatible enable
鈥?ESD protected
Applications
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Squib firing
Refresh
Burst/dump
Low duty cycle load
LCD bias generator
Local 5V logic supply
MOSFET driver
Battery or solarcell boost
Ordering Information
Part Number
MIC2660BM5
Temperature Range
鈥?0擄C to +85擄C
Package
SOT-23-5
Typical Application
+3V Input
0.01碌F
MIC2660
1
3
IN
EN
OUT
GND
2
5
+5V, 2.5mA*
Output
0.01碌F
* The output is unregulated and
follows a load-line type function
Enable
Disable
10
Low-Current Unregulated Step-Up Supply
Timing Diagram
2V
EN
0V
5V
0.2
碌s
1.3
碌s
OUT
1V
0V
Output vs. Enable Input
1997
10-11
46WX2984MMIC2660BM5相關(guān)型號PDF文件下載
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英文版
IC-SM-VOLTAGE CONVERTER
ETC
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英文版
IC-SM-VOLTAGE CONVERTER
1
2
3
4
5
