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MAX8869EUE25+

P1-P3P4-P6P7-P9P10-P11
19-1692; Rev 2; 10/12
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
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
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)
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
N.C. N.C.
OUT
OUT
OUT
OUT
SET
GND
N.C.
TOP VIEW
MAX8869
TSSOP-EP
IN
IN
RST
IN
IN
SHDN
SS
+
Pin Configuration
IN
IN
IN
IN
SHDN
SS
OUT
OUT
OUT
OUT
RST
SET
GND
ON
OFF
1µF
1µF
V
IN
+2.7V TO +5.5V
V
OUT
UP TO 1A
RESET
OUTPUT
MAX8869
Typical Operating Circuit
Ordering Information
Microcap is a registered trademark of American Technical
Ceramics Corp.
PART PIN-PACKAGE V
OUT
(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.
MAX8869
1A, Microcap, Low-Dropout,
Linear Regulator
2
Maxim Integrated
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= +2.7V or V
OUT(NOM)
+ 0.5V (whichever is greater), SHDN = IN, SS = open, SET = GND, C
OUT
= 1µF, T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°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.
IN, SHDN, RST, SS to GND ......................................-0.3V to +6V
OUT, SET to GND ........................................-0.3V to (V
IN
+ 0.3V)
Output Short-Circuit Duration ........................................Indefinite
Continuous Power Dissipation (T
A
= +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
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage Range V
IN
2.7 5.5 V
Input Undervoltage Lockout Typical hysteresis = 50mV 2.35 2.45 2.55 V
Output Voltage Accuracy I
OUT
= 1mA, T
A
= +85°C-11%
SET Regulation Voltage
(Adjustable Mode)
I
OUT
= 150mA, T
A
= +85°C 792 800 808 mV
Line Regulation ∆V
LNR
V
IN
= V
OUT
+ 0.5V to +5.5V, I
OUT
= 10mA 0.1 %/V
Load Regulation ∆V
LDR
I
OUT
= 1mA to 1A 0.8 1.5 %/A
Ad j ustab l e O utp ut V ol tag e Range
0.8 5 V
Maximum Output Current I
OUT
Continuous 1 A
RMS
Short-Circuit Current Limit I
LIM
V
OUT
= 0V 1.0 1.9 A
In-Regulation Current Limit I
LIM
V
SET
= 0.76V 2.0 4.0 A
SET Dual Mode Threshold 40 80 120 mV
SET Input Bias Current I
SET
V
SET
= +0.9V 50 300 nA
I
OUT
= 100µA 0.5 2.0
Ground Current I
GND
I
OUT
= 1A 2.5
mA
I
OUT
= 1mA, +2.7V < V
IN
< +5.5V 0.2
Dropout Voltage
(Note 1)
I
OUT
= 1A, V
OUT
= +3.3V (Note 2) 200 350
mV
Output Voltage Noise f = 10Hz to 1M Hz, C
OU T
= 1µF, I
OU T
= 150mA 150 µV
RMS
Power-Supply Rejection Ratio PSRR f = 100kHz, C
OUT
= 1µF 54 dB
Shutdown Supply Current I
OFF
SHDN = GND, V
IN
= +5.5V, V
OUT
= 0 0.1 10 µA
V
IH
1.6
SHDN Input Threshold
V
IL
+2.7V < V
IN
< +5.5V
0.6
V
SHDN Input Bias Current SHDN = GND or IN 0 0.1 µA
Soft-Start Charge Current I
SS
V
SS
= 0V 6 µA
RST Output Low Voltage I
SINK
= 1mA 0.1 V
IN Operating Voltage Range for
RST Valid
I
SINK
= 10µA 1.0 5.5 V
RST Leakage V
RST
= +5.5V 0.01 1 µA
RST Trip Level Referred to
Nominal V
OUT
Falling edge, typical hysteresis = 10mV 89 92 95 % OUT
RST Release Delay Rising edge 1 3 5.5 ms
Thermal Shutdown Threshold T
SHDN
Typical thermal hysteresis = +20°C +170
o
C
Dual Mode is a trademark of Maxim Integrated Products.
MAX8869
1A, Microcap, Low-Dropout,
Linear Regulator
3
Maxim Integrated
ELECTRICAL CHARACTERISTICS
(V
IN
= +2.7V or V
OUT(NOM)
+ 0.5V (whichever is greater), SHDN = IN, SS = open, SET = GND, C
OUT
= 1µF, T
A
= -40°C to +85°C,
unless otherwise noted.) (Note 3)
Note 1: Dropout voltage is (V
IN
- V
OUT
) when V
OUT
falls to 100mV below the value of V
OUT
measured when V
IN
= V
OUT(NOM)
+0.5V.
Since the minimum input voltage is 2.7V, this specification is only meaningful when V
OUT
≥ 2.7V.
Note 2: The output voltage is externally set using a resistive voltage-divider from OUT to SET.
Note 3: Specifications to -40°C are guaranteed by design, not production tested.
PARAMETER
SYMBOL CONDITIONS MIN MAX UNITS
Input Voltage Range V
IN
2.7 5.5 V
Input Undervoltage Lockout Typical hysteresis = 50mV 2.3 2.6 V
Output Voltage Accuracy I
OUT
= 1mA, T
A
= +85°C -1 1 %
SET Regulation Voltage
(Adjustable Mode)
I
OUT
= 150mA, T
A
= +85°C 792 808 mV
Load Regulation ∆V
LDR
I
OUT
= 1mA to 1A 2.0 %/A
Ad j ustab l e O utp ut V ol tag e Rang e 0.8 5 V
Maximum Output Current I
OUT
Continuous 1 A
RMS
Short-Circuit Current Limit I
LIM
V
OUT
= 0V 1.0 A
In-Regulation Current Limit I
LIM
V
SET
= +0.76V 2.0 A
SET Dual Mode Threshold 40 120 mV
SET Input Bias Current I
SET
V
SET
= +0.9V 300 nA
Ground Current I
GND
I
OUT
= 100µA 2.0 mA
Dropout Voltage (Note 1) I
OUT
= 1A, V
OUT
= +3.3V (Note 2) 350 mV
Shutdown Supply Current I
OFF
SHDN = GND, V
IN
= +5.5V, V
OUT
= 0V 10 µA
V
IH
1.7
SHDN Input Threshold
V
IL
+2.7V < V
IN
< +5.5V
0.6
V
SHDN Input Bias Current SHDN = GND or IN 0.1 µA
RST Output Low Voltage I
SINK
= 1mA 0.1 V
IN Operating Voltage Range for
RST Valid
I
SINK
= 10µA 1.0 5.5 V
RST Leakage V
RST
= +5.5V 1 µA
RST Trip Level Referred to
Nominal V
OUT
Falling edge, typical hysteresis = 10mV 88 95 % OUT
RST Release Delay Rising edge 1 6 ms
P1-P3P4-P6P7-P9P10-P11

MAX8869EUE25+

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Manufacturer:
Maxim Integrated
Description:
LDO Voltage Regulators 1A MicroCap Linear Regulator
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