Regulator. MAX8869 Datasheet

MAX8869 Datasheet PDF


Part

MAX8869

Description

1A / MicroCap / Low-Dropout / Linear Regulator

Manufacture

Maxim

Page 11 Pages
Datasheet
Download MAX8869 Datasheet


MAX8869 Datasheet
MAX8869
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 registered trademark of American Technical
Ceramics Corp.
Typical Operating Circuit
VIN
+2.7V TO +5.5V
1µF
ON
OFF
IN
IN
IN
IN
SHDN
SS
OUT
OUT
OUT
OUT
RST
SET
GND
MAX8869
VOUT
UP TO 1A
1µF
RESET
OUTPUT
Features
o Guaranteed 1A Output Current
o Stable with COUT = 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
PIN-PACKAGE
VOUT (V)*
MAX8869EUE50+ 16 TSSOP-EP**
+5.0
MAX8869EUE33+ 16 TSSOP-EP**
+3.3
MAX8869EUE25+ 16 TSSOP-EP**
+2.5
MAX8869EUE25/V+ 16 TSSOP-EP**
+2.5
MAX8869EUE18+ 16 TSSOP-EP**
+1.8
MAX8869EUE10+ 16 TSSOP-EP**
+1.0
Note: All devices are specified over the -40°C to +85°C
temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*Or adjustable from +0.8V to +5.0V. Contact factory for other
preset output voltages.
**EP = Exposed pad.
/V denotes an automotive qualified part.
Pin Configuration
TOP VIEW
+
N.C. 1
IN 2
IN 3
IN 4 MAX8869
IN 5
RST 6
SHDN 7
SS 8
16 N.C.
15 OUT
14 OUT
13 OUT
12 OUT
11 SET
10 GND
9 N.C.
TSSOP-EP
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-1692; Rev 2; 10/12

MAX8869 Datasheet
MAX8869
1A, Microcap, Low-Dropout,
Linear Regulator
ABSOLUTE MAXIMUM RATINGS
IN, SHDN, RST, SS to GND ......................................-0.3V to +6V
OUT, SET to GND ........................................-0.3V to (VIN + 0.3V)
Output Short-Circuit Duration ........................................Indefinite
Continuous Power Dissipation (TA = +70°C)
16-Pin TSSOP-EP (derate 26.1mW/°C above +70°C)......2.0W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ...............................-65°C to 150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = +2.7V or VOUT(NOM) + 0.5V (whichever is greater), SHDN = IN, SS = open, SET = GND, COUT = 1µF, TA = 0°C to +85°C,
unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
Input Voltage Range
Input Undervoltage Lockout
Output Voltage Accuracy
SET Regulation Voltage
(Adjustable Mode)
SYMBOL
VIN
CONDITIONS
Typical hysteresis = 50mV
IOUT = 1mA, TA = +85°C
IOUT = 150mA, TA = +85°C
MIN TYP MAX UNITS
2.7 5.5 V
2.35 2.45 2.55
V
-1 1 %
792 800 808 mV
Line Regulation
Load Regulation
Adjustable Output Voltage Range
VLNR
VLDR
VIN = VOUT + 0.5V to +5.5V, IOUT = 10mA
IOUT = 1mA to 1A
Maximum Output Current
Short-Circuit Current Limit
In-Regulation Current Limit
SET Dual Mode Threshold
IOUT
ILIM
ILIM
Continuous
VOUT = 0V
VSET = 0.76V
SET Input Bias Current
Ground Current
Dropout Voltage
(Note 1)
Output Voltage Noise
Power-Supply Rejection Ratio
Shutdown Supply Current
SHDN Input Threshold
SHDN Input Bias Current
ISET
IGND
PSRR
IOFF
VIH
VIL
VSET = +0.9V
IOUT = 100µA
IOUT = 1A
IOUT = 1mA, +2.7V < VIN < +5.5V
IOUT = 1A, VOUT = +3.3V (Note 2)
f = 10Hz to 1MHz, COUT = 1µF, IOUT = 150mA
f = 100kHz, COUT = 1µF
SHDN = GND, VIN = +5.5V, VOUT = 0
+2.7V < VIN < +5.5V
SHDN = GND or IN
Soft-Start Charge Current
RST Output Low Voltage
ISS VSS = 0V
ISINK = 1mA
IN Operating Voltage Range for
RST Valid
ISINK = 10µA
RST Leakage
RST Trip Level Referred to
Nominal VOUT
RST Release Delay
V RST = +5.5V
Falling edge, typical hysteresis = 10mV
Rising edge
Thermal Shutdown Threshold
TSHDN Typical thermal hysteresis = +20°C
Dual Mode is a trademark of Maxim Integrated Products.
2
0.1 %/V
0.8 1.5 %/A
0.8 5 V
1
1.0 1.9
ARMS
A
2.0 4.0
A
40 80 120 mV
50 300 nA
0.5 2.0
mA
2.5
0.2
mV
200 350
150 µVRMS
54 dB
0.1 10
µA
1.6
V
0.6
0 0.1 µA
6 µA
0.1 V
1.0 5.5 V
0.01 1
µA
89 92 95 % OUT
1 3 5.5 ms
+170
oC
Maxim Integrated


Features Datasheet pdf 19-1692; Rev 0; 8/00 1A, MicroCap, Low- Dropout, Linear Regulator General Descr iption The MAX8869 low-dropout linear r egulator operates from a +2.7V to +5.5V input and delivers a guaranteed 1A loa d current with a low 200mV dropout. The highaccuracy (±1%) output voltage is preset at +5V, +3.3V, +2.5V, +1.8V, or +1.0V or is adjustable from +0.8V to +5 V with an external resistor-divider. Th e MAX8869 uses MicroCap™ technology a nd requires only a small 1µF output ca pacitor for guaranteed stability. An in ternal PMOS pass transistor allows low 500µA supply current, making this regu lator useful for networking and telecom hardware as well as battery-operated e quipment. Other features include softst art, low-power shutdown, short-circuit protection, and thermal shutdown protec tion. The MAX8869 is available in a 1.5 W, 16-pin TSSOP package, which is 30% s maller than a SOT223 and only 1.1mm hig h. o Guaranteed 1A Output Current o Sta ble with COUT = 1µF o Low 200mV Dropout at 1A o ±1% Output Voltage A.
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