ame5140 AME, Inc., ame5140 Datasheet
ame5140
Manufacturer Part Number
ame5140
Description
1.6 Mhz Boost Converter With 30v Internal Fet Switch
Manufacturer
AME, Inc.
Datasheet
1.AME5140.pdf
(27 pages)
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Price
Part Number:
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Manufacturer:
AME
Quantity:
20 000
Part Number:
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Quantity:
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n Features
AME5140
n General Description
converters operating at fixed frequency of 1.6 MHz.
0.75mm) & MSOP-8 packages, made possible by the
minimal power loss of the internal 1.8A switch, and use
of small inductor and capacitors result in the industry's
highest power density. The 30V internal switch makes
these solutions perfect for boosting to voltages up to 30V.
be used to reduce quiescent current and extend battery
life. Protection is provided through cycle-by-cycle cur-
rent limiting and thermal shutdown. Internal compensa-
tion simplifies and reduces component count.
n Applications
Rev.G.04
The AME5140 switching regulator is current-mode boost
The use of SOT-25/TSOT-25, DFN-8(3mmx3mmx
These parts have a logic-level shutdown pin that can
l 30V DMOS FET Switch
l 1.6 MHz Switching Frequency
l Low R
l Switch Current Up to 1.8A
l Wide Input Voltage Range (2.7V-5.5V)
l Low Shutdown Current (<1 A)
l SOT-25/TSOT-25, DFN-8(3mmx3mmx0.75mm) &
l Uses Tiny Capacitors and Inductor
l Cycle-by-Cycle Current Limiting
l All AME's Lead Free Products Meet RoHS
l White LED Current Source
l PDA's and Palm-Top Computers
l Digital Cameras
l Portable Phones and Games
l Local Boost Regulator
Standards
MSOP-8 Packages
AME, Inc.
DSON
DMOS FET
n Typical Application
1.6 MHz Boost Converter With
V
5V
V
5V
EN
GND
4.2V
V
IN
EN
GND
EN
GND
IN
IN
Figure 1. 4.2V to 5V Boost Converter
4.7 F
Figure 2. 5V to 12V Boost Converter
Figure 3. 5V to 18V Boost Converter
4.7 F
4.7 F
C1
C1
C1
51K
R3
51K
51K
30V Internal FET Switch
R3
R3
EN
IN
EN
EN
IN
IN
AME5140
AME5140
AME5140
L/10 H
L/6.8 H
L/10 H
GND
GND
GND
SW
SW
FB
13.3K
SW
13.3K
13.3K
FB
FB
R2
R2
R2
D1
D1
D1
160pF
680pF
220pF
183K
117K
CF
43K
R1
CF
CF
R1
R1
V
V
V
800mA
4.7 F
400mA
22 F
OUT
4.7 F
250mA
C2
OUT
C2
C2
OUT
12V
18V
5V
1
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