MAX1759 Maxim, MAX1759 Datasheet
MAX1759
Manufacturer Part Number
MAX1759
Description
Buck/Boost Regulating Charge Pump in MAX
Manufacturer
Maxim
Datasheet
1.MAX1759.pdf
(12 pages)
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The MAX1759 is a buck/boost regulating charge pump
that generates a regulated output voltage from a single
lithium-ion (Li+) cell, or two or three NiMH or alkaline
cells for small hand-held portable equipment. The
MAX1759 operates over a wide +1.6V to +5.5V input
voltage range and generates a fixed 3.3V or adjustable
(2.5V to 5.5V) output (Dual Mode
charge-pump architecture allows the input voltage to be
higher or lower than the regulated output voltage.
Despite its high 1.5MHz operating frequency, the
MAX1759 maintains low 50µA quiescent supply current.
Designed to be an extremely compact buck/boost con-
verter, this device requires only three small ceramic
capacitors to build a complete DC-DC converter capa-
ble of generating a guaranteed 100mA (min) output
current from a +2.5V input. For added flexibility, the
MAX1759 also includes an open-drain power-OK
(POK) output that signals when the output voltage is in
regulation.
The MAX1759 is available in a space-saving 10-pin
µMAX package that is 1.09mm high and half the size of
an 8-pin SO.
19-1600; Rev 0; 1/00
Dual Mode is a trademark of Maxim Integrated Products.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
ON
Li+ Battery-Powered Applications
Miniature Equipment
Backup Battery Boost Converters
Translators
+1.6V TO +5.5V
C
IN
OFF
IN
Typical Operating Circuit
________________________________________________________________ Maxim Integrated Products
IN
SHDN
CXN
General Description
FB
MAX1759
GND
C
X
PGND
CXP
OUT
POK
™)
Applications
. Maxim’s unique
3.3V AT 100mA
POWER OK
OUT
C
OUT
o Regulated Output Voltage (Fixed 3.3V or
o 100mA Guaranteed Output Current
o +1.6V to +5.5V Input Voltage Range
o Low 50µA Quiescent Supply Current
o 1µA Shutdown Mode
o Load Disconnected from Input in Shutdown
o High 1.5MHz Operating Frequency
o Uses Small Ceramic Capacitors
o Short-Circuit Protection and Thermal Shutdown
o Small 10-Pin µMAX Package
Buck/Boost Regulating
Charge Pump in µMAX
MAX1759EUB
Adjustable 2.5V to 5.5V)
TOP VIEW
PART
SHDN
GND
POK
IN
IN
TEMP. RANGE
-40°C to +85°C
1
2
3
4
5
Ordering Information
MAX1759
µMAX
Pin Configuration
10
9
8
7
6
10 µMAX
PIN-PACKAGE
FB
OUT
CXP
CXN
PGND
Features
1
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