MAX662A Maxim, MAX662A Datasheet
MAX662A
Manufacturer Part Number
MAX662A
Description
+12V / 30mA Flash Memory Programming Supply
Manufacturer
Maxim
Datasheet
1.MAX662A.pdf
(6 pages)
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The MAX662A is a regulated +12V, 30mA-output, charge-
pump DC-DC converter. It provides the necessary +12V
±5% output to program byte-wide flash memories, and
requires no inductors to deliver a guaranteed 30mA out-
put from inputs as low as 4.75V. It fits into less than 0.1in
of board space. The MAX662A is a pin-compatible
upgrade to the MAX662, and is recommended for new
designs. The MAX662A offers lower quiescent and shut-
down currents, and guarantees the output current over all
temperature ranges.
The MAX662A is the first charge-pump boost converter to
provide a regulated +12V output. It requires only a few
inexpensive capacitors, and the entire circuit is complete-
ly surface-mountable.
A logic-controlled shutdown pin that interfaces directly
with microprocessors reduces the supply current to only
0.5µA. The MAX662A comes in 8-pin narrow SO and DIP
packages.
For higher-current flash memory programming solutions,
refer to the data sheets for the MAX734 (120mA output
current, guaranteed) and MAX732 (200mA output cur-
rent, guaranteed) PWM, switch-mode DC-DC converters.
Or, refer to the MAX761 data sheet for a 150mA, PFM
switch-mode DC-DC converter that operates from inputs
as low as 2V.
________________________Applications
19-0253; Rev 1; 8/94
Call toll free 1-800-998-8800 for free samples or literature.
__________Typical Operating Circuit
_______________General Description
0.22 F
4.75V TO 5.5V
INPUT
+12V Flash Memory Programming Supplies
Compact +12V Op-Amp Supplies
Switching MOSFETs in Low-Voltage Systems
Dual-Output +12V and +20V Supplies
4.7 F
C1-
SHDN
C1+
MAX662A
V
GND
CC
________________________________________________________________ Maxim Integrated Products
V
C2+
OUT
C2-
0.22 F
12V ±5%
OUTPUT
30mA
4.7 F
V
MEMORY
pp
FLASH
+12V, 30mA Flash Memory
2
____________________________Features
* Dice are tested at T
** Contact factory for availability and processing to MIL-STD-883.
______________Ordering Information
MAX662ACPA
MAX662ACSA
MAX662AC/D
MAX662AEPA
MAX662AESA
MAX662AMJA
__________________Pin Configuration
Regulated +12V ±5% Output Voltage
4.5V to 5.5V Supply Voltage Range
Fits in 0.1in
Guaranteed 30mA Output
No Inductor—Uses Only 4 Capacitors
185µA Quiescent Current
Logic-Controlled 0.5µA Shutdown
8-Pin Narrow SO and DIP Packages
TOP VIEW
Programming Supply
PART
2
C1+
C2+
C1-
C2-
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
TEMP. RANGE
1
2
3
4
A
0°C to +70°C
0°C to +70°C
0°C to +70°C
= +25°C.
MAX662A
DIP/SO
8
7
6
5
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP**
SHDN
GND
V
V
OUT
CC
1
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