MAX8869 Datasheet, PDF (1/10 Pages) Maxim Integrated Products – 1A, MicroCap, Low-Dropout, Linear Regulator

19-1692; Rev 0; 8/00
1A, MicroCap, Low-Dropout,
Linear Regulator
General Description
The MAX8869 low-dropout linear regulator operates
from a +2.7V to +5.5V input and delivers a guaranteed
1A load current with a low 200mV dropout. The high-
accuracy (±1%) output voltage is preset at +5V, +3.3V,
+2.5V, +1.8V, or +1.0V or is adjustable from +0.8V to
+5V with an external resistor-divider.
The MAX8869 uses MicroCap™ technology and
requires only a small 1µF output capacitor for guaran-
teed stability. An internal PMOS pass transistor allows
low 500µA supply current, making this regulator useful
for networking and telecom hardware as well as bat-
tery-operated equipment. Other features include soft-
start, low-power shutdown, short-circuit protection, and
thermal shutdown protection.
The MAX8869 is available in a 1.5W, 16-pin TSSOP
package, which is 30% smaller than a SOT223 and only
1.1mm high.
________________________Applications
Telecom Hardware
Network Equipment
Mobile Phone Base Stations
Personal Computers
Notebook Computers
MicroCap is a trademark of Maxim Integrated Products.
Typical Operating Circuit
IN
+2.7V TO +5.5V
IN
OUT
IN
OUT
1µF
IN
OUT
IN
OUT
ON
OFF
SHDN
RST
SS
SET
GND
MAX8869
OUT
UP TO 1A
1µF
RESET
OUTPUT
Features
o Guaranteed 1A Output Current
o Stable with C_OUT = 1µF
o Low 200mV Dropout at 1A
o ±1% Output Voltage Accuracy
Preset at +5V, +3.3V, +2.5V, +1.8V, or +1.0V
and Adjustable from +0.8V to +5.0V
o 54dB PSRR at 100kHz
o Adjustable Soft-Start
o 3ms Reset Output
o Foldback Output Current Limit
o Thermal Overload Protection
o High-Power 16-Pin TSSOP Package (1.5W)
30% Smaller than SOT223 (only 1.1mm high)
Ordering Information
PART
TEMP.
RANGE
PIN-
PACKAGE
V_OUT*
(V)
MAX8869EUE50 -40°C to +85°C 16 TSSOP-EP** +5.0
MAX8869EUE33
MAX8869EUE25
MAX8869EUE18
MAX8869EUE10
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
16 TSSOP-EP
16 TSSOP-EP
16 TSSOP-EP
16 TSSOP-EP
+3.3
+2.5
+1.8
+1.0
*Or adjustable from +0.8V to +5.0V. Contact factory for other
preset output voltages.
**EP = Exposed pad.
Pin Configuration
TOP VIEW
N.C. 1
IN 2
IN 3
IN 4
IN 5
RST 6
SHDN 7
SS 8
MAX8869
16 N.C.
15 OUT
14 OUT
13 OUT
12 OUT
11 SET
10 GND
9 N.C.
TSSOP-EP
________________________________________________________________ Maxim Integrated Products 1
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