OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

MAX8888EZK25T+T

P1-P3P4-P6P7-P9
General Description
The MAX8887/MAX8888 low-dropout linear regulators
operate from a 2.5V to 5.5V input and deliver up to
300mA continuous (500mA pulsed) current. The
MAX8887 is optimized for low-noise operation, while the
MAX8888 includes an open-drain power-OK (POK) ouput
flag. Both regulators feature exceptionally low 100mV
dropout at 200mA. These devices are available in a vari-
ety of preset output voltages in the 1.5V to 3.3V range.
An internal PMOS pass transistor allows the low 55µA
supply current to remain independent of load, making
these devices ideal for portable battery-powered equip-
ment such as personal digital assistants (PDAs), cellu-
lar phones, cordless phones, and notebook computers.
Other features include a micropower shutdown mode,
short-circuit protection, thermal shutdown protection,
and an active-low open-drain POK output that indicates
when the output is out of regulation. The
MAX8887/MAX8888 are available in a thin 5-pin SOT23
package that is only 1mm high.
________________________Applications
Notebook Computers
Wireless Handsets
PDAs and Palmtop Computers
Digital Cameras
PCMCIA Cards
Hand-Held Instruments
Features
♦ Guaranteed 300mA Output Current (500mA for
Pulsed Loads)
♦ Low 100mV Dropout at 200mA Load
♦ POK Output (MAX8888)
♦ 42µV
RMS
Output Noise (MAX8887)
♦ Preset Output Voltages (1.5V, 1.8V, 2.85V, and
3.3V)
♦ 55µA No-Load Supply Current
♦ Thermal-Overload and Short-Circuit Protection
♦ Foldback Output Current-Limit Protection
♦ 60dB PSRR at 1kHz
♦ 0.1µA Shutdown Current
♦ Thin 5-Pin SOT23 Package, 1mm High
MAX8887/MAX8888
Low-Dropout, 300mA Linear Regulators in SOT23
________________________________________________________________
Maxim Integrated Products
1
GND
BPSHDN
15OUTIN
MAX8887
TOP VIEW
2
34
GND
POKSHDN
15OUTIN
MAX8888
2
34
Pin Configurations
MAX8887
MAX8888
ON
OFF
INPUT
2.5V TO 5.5V
IN
SHDN
GND
(BP)
POK
OUT
V
OUT
300mA
C
IN
2.2µF
C
OUT
2.2µF
C
BP
0.01µF
( ) ARE FOR MAX8887 ONLY.
Typical Operating Circuit
19-1859; Rev 4; 7/09
Ordering Information
PART
TEMP
RANGE
PIN-
PACKAGE
T O P
MARK
M A X8 8 8 7 E Z K15+ T -40°C to +85°C 5 SOT23 ADQD
MAX8887EZK18+ T -40°C to +85°C 5 SOT23 ADPX
MAX8887EZK29+ T -40°C to +85°C 5 SOT23 ADPY
MAX8887EZK33+ T -40°C to +85°C 5 SOT23 ADPZ
MAX8887EZKxy+ T* -40°C to +85°C 5 SOT23 —
M A X8 8 8 8 E Z K15+ T -40°C to +85°C 5 SOT23 ADQE
MAX8888EZK18+ T -40°C to +85°C 5 SOT23 ADQA
MAX8888EZK18/V+ T -40°C to +85°C 5 SOT23 —
MAX8888EZK29+ T -40°C to +85°C 5 SOT23 ADQB
MAX8888EZK33+ T -40°C to +85°C 5 SOT23 ADQC
MAX8888EZKxy+ T* -40°C to +85°C 5 SOT23 —
*
Other versions (xy) between +1.5 and +3.3V are available in
100mV increments. Contact factory for other versions. Minimum
order quantity is 25,000 units.
+
Denotes a lead(Pb)-free RoHS-compliant package.
/V denotes an automotive qualified port.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX8887/MAX8888
Low-Dropout, 300mA Linear Regulators in SOT23
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= V
OUT
+ 1V, SHDN = IN, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
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, POK, to GND...........................................-0.3V to +7V
OUT, BP to GND ............................................-0.3 to (V
IN
+ 0.3V)
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+500°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage V
IN
2.5 5.5 V
Input Undervoltage Lockout
V
IN
rising
(2% typical hysteresis)
2.15 2.4 V
T
A
= +25°C, I
OUT
= 100mA -1.2 +1.2
I
OUT
= 100µA to 300mA,
T
A
= 0°C to +85°C
-2 +2
Output Voltage Accuracy
I
OUT
= 100µA to 300mA -3 +3
%
Continuous 300
Maximum Output Current
10ms pulse 500
mA
V
OUT
= 0
300
Current Limit
V
OUT
> 93% of nominal value 420
mA
No load 55 100
Ground-Pin Current
I
OUT
= 300mA 65
µA
I
OUT
= 1mA
0.5
I
OUT
= 200mA 100 200
Dropout Voltage (Note 2) V
OUT
= +3.3V
I
OUT
= 300mA 150
mV
Line Regulation
V
IN
= 2.5V or (V
OUT
+ 0.4V) to 5.5V,
I
OUT
= 5mA
-0.15 0 0.15 %/V
MAX8887
10Hz to 100kHz, C
BP
= 0.01µF,
C
OUT
= 2.2µF, ESR
COUT
< 0.1Ω
42
Output Noise
MAX8888
10Hz to 100kHz, C
OUT
= 2.2µF,
ESR
COUT
< 0.1Ω
360
µV
RMS
MAX8887
f < 1kHz, C
BP
= 0.01µF,
C
OUT
= 4.7µF, ESR
COUT
< 0.1Ω
60
PSRR
MAX8888
f < 1kHz, C
OUT
= 2.2µF,
ESR
COUT
< 0.1Ω
40
dB
MAX8887/MAX8888
Low-Dropout, 300mA Linear Regulators in SOT23
_______________________________________________________________________________________ 3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SHUTDOWN
Shutdown Supply Current SHDN = GND, V
IN
= 5.5V 0.1 2 µA
V
IH
2.5V ≤ V
IN
≤ 5.5V 1.6
SHDN Input Threshold
V
IL
2.5V ≤ V
IN
≤ 5.5V 0.6
V
SHDN Input Bias Current SHDN = IN or GND 10 100 nA
OUT Discharge Resistance in
Shutdown
SHDN = GND 650 1100 Ω
POK (MAX8888 ONLY)
POK Trip Level, Referred to OUT
Set Point
V
OUT
falling
(1% typical hysteresis)
90 92.5 95 %
Operating IN Voltage Range for
Valid POK
1.0 5.5 V
POK Output Voltage Low V
OL
I
SINK
= 1mA 0.1 V
POK Output Leakage Current V
POK
= 5.5V, SHDN = IN 100 nA
THERMAL PROTECTION
Thermal Shutdown Temperature 170 °C
Thermal Shutdown Hysteresis 20 °C
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
OUT
+ 1V, SHDN = IN, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
Note 1: All parts are 100% tested at T
A
= +25°C. Limits over the operating temperature range are guaranteed by design.
Note 2: Typical and maximum dropout voltage for different output voltages are shown in the
Typical Operating Characteristics
curves.
Typical Operating Characteristics
(
Typical Operating Circuit
, T
A
= +25°C, unless otherwise noted.)
0
1.0
0.5
2.0
1.5
3.0
2.5
3.5
2.0 3.0 3.52.5 4.0 4.5 5.0 5.5
OUTPUT VOLTAGE vs. INPUT VOLTAGE
MAX8887/8 toc01
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
I
OUT
= 0
I
OUT
= 300mA
-1.0
-0.6
-0.8
0.0
-0.2
-0.4
0.2
0.4
0.8
0.6
1.0
10050 150 200 250 300
OUTPUT VOLTAGE ACCURACY
vs. LOAD CURRENT
MAX8887/8 toc02
LOAD CURRENT (mA)
% DEVIATION (%)
0
-0.05
-0.02
-0.03
-0.04
-0.01
0.0
0.01
0.02
0.03
0.04
0.05
-40 10-15 35 60 85
OUTPUT VOLTAGE ACCURACY
vs. TEMPERATURE
MAX8887/8 toc03
TEMPERATURE (°C)
% DEVIATION
I
OUT
= 0
V
IN
= V
OUT
+ 500mV
P1-P3P4-P6P7-P9

MAX8888EZK25T+T

Mfr. #:
Buy MAX8888EZK25T+T
Manufacturer:
Maxim Integrated
Description:
LDO Voltage Regulators 300mA Linear Regulator
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet