MAX682 Maxim, MAX682 Datasheet
MAX682
Manufacturer Part Number
MAX682
Description
3.3V-Input to Regulated 5V-Output Charge Pumps
Manufacturer
Maxim
Datasheet
1.MAX682.pdf
(12 pages)
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The MAX682/MAX683/MAX684 charge-pump regula-
tors generate 5V from a 2.7V to 5.5V input. They are
specifically designed to serve as high-efficiency auxil-
iary supplies in applications that demand a compact
design. The MAX682, MAX683, and MAX684 deliver
250mA, 100mA, and 50mA output current, respectively.
These complete 5V regulators require only one resistor
and three external capacitors—no inductors are need-
ed. High switching frequencies (externally adjustable
up to 2MHz) and a unique regulation scheme allow the
use of capacitors as small as 1µF per 100mA of output
current. The MAX683/MAX684 are offered in a space-
saving 8-pin µMAX package that is only 1.1mm high,
while the MAX682 is available in an 8-pin SO.
19-0177; Rev 1; 8/98
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
2.7V TO 5.5V
INPUT
Flash Memory Supplies
Battery-Powered Applications
Miniature Equipment
PCMCIA Cards
3.3V to 5V Local Conversion Applications
Backup-Battery Boost Converters
3V to 5V GSM SIMM Cards
R
EXT
Typical Operating Circuit
________________________________________________________________ Maxim Integrated Products
General Description
IN
SKIP
SHDN
CXN
GND
MAX682
3.3V-Input to Regulated 5V-Output
Applications
PGND
CXP
OUT
OUTPUT
5V/250mA
SHDN
MAX682ESA
MAX683EUA
MAX684EUA
SKIP
GND
Ultra-Small: 1µF Capacitors per 100mA of Output
Current
No Inductors Required
1.1mm Height in µMAX Package (MAX683/MAX684)
Up to 250mA Output Current (MAX682)
Regulated ±4% Output Voltage
50kHz to 2MHz Adjustable Switching Frequency
2.7V to 5.5V Input Voltage
100µA Quiescent Current in Pulse-Skipping Mode
0.1µA Shutdown Current
TOP VIEW
IN
1
2
4
3
PART
MAX682
SO
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Charge Pumps
6
8
7
5
Ordering Information
OUT
CXP
CXN
PGND
Pin Configurations
SHDN
SKIP
GND
IN
1
2
4
3
MAX683
MAX684
PIN-PACKAGE
8 SO
8 µMAX
8 µMAX
MAX
Features
7
6
5
8
OUT
CXN
CXP
PGND
1
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