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PDF MAX1963 Data sheet ( Hoja de datos )
| Número de pieza | MAX1963 | |
| Descripción | Low-Input-Voltage / 300mA LDO Regulators with RESETin SOT and TDFN | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-3040; Rev 0; 10/03
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
General Description
The MAX1963/MAX1976 low-dropout linear regulators
operate from a +1.62V to +3.6V supply and deliver a
guaranteed 300mA continuous load current with a low
100mV dropout. The high-accuracy (±0.5%) output
voltage is preset to an internally trimmed voltage in the
+0.75V to +3.0V range. An active-low, open-drain reset
output remains asserted for at least 2.2ms (MAX1963)
or 70ms (MAX1976) after the output voltage reaches
regulation. These devices are offered in 6-pin thin
SOT23 and 6-pin 3mm x 3mm thin DFN packages.
An internal PMOS pass transistor allows the low supply
current to remain independent of load and dropout volt-
age, making these devices ideal for portable battery-pow-
ered equipment such as personal digital assistants
(PDAs), cell phones, cordless phones, and notebook com-
puters. Other features include logic-controlled shutdown,
short-circuit protection, and thermal-overload protection.
Features
o Low 1.62V Minimum Input Voltage
o Guaranteed 300mA Output Current
o ±1.5% Accuracy Over Load/Line/Temp
o Low 100mV Dropout at 300mA Load
o 2.2ms (MAX1963) or 70ms (MAX1976)
RESET Output Flag
o Supply Current Independent of Load and
Dropout Voltage
o Logic-Controlled Shutdown
o Thermal-Overload and Short-Circuit Protection
o Preset Output Voltages (0.75V to 3.0V)
o Tiny 6-Pin Thin SOT23 Package (<1.1mm High)
o Thin 6-Pin TDFN Package (<0.8mm High)
Applications
Notebook Computers
Cellular and PCS Telephones
Personal Digital Assistants (PDAs)
Hand-Held Computers
Digital Cameras
PCMCIA Cards
CD and MP3 Players
Ordering Information
PART*
TEMP RANGE PIN-PACKAGE
MAX1963EZT_ _ _-T -40°C to +85°C 6 Thin SOT23-6
MAX1963ETT_ _ _-T -40°C to +85°C 6 TDFN
MAX1976EZT_ _ _-T -40°C to +85°C 6 Thin SOT23-6
MAX1976ETT_ _ _-T -40°C to +85°C 6 TDFN
*Insert the desired three-digit suffix (see the Selector Guide) into
the blanks to complete the part number. Contact the factory for
other output voltages.
TOP VIEW
Pin Configurations
IN 1
6 OUT OUT 1
6 IN
GND 2
MAX1963
MAX1976
5 I.C.
I.C. 2
MAX1963
MAX1976
5 SHDN
SHDN 3
RESET 3
4 RESET
4 GND
THIN SOT23
TDFN
3mm x 3mm
Typical Operating Circuit
INPUT
1.62V TO 3.6V
CIN
1µF
ON
OFF
OUTPUT
300mA 0.75V TO 3.0V
IN OUT
MAX1963
MAX1976
COUT LOGIC
4.7µF SUPPLY
100kΩ
SHDN
RESET
TO µC
GND
Selector Guide appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
Typical Operating Characteristics (continued)
(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA = +25°C, unless otherwise noted.)
LOAD-TRANSIENT RESPONSE
MAX1963/76 toc11
LOAD-TRANSIENT RESPONSE
NEAR DROPOUT
MAX1963/76 toc12
200mA
IOUT
20mA
200mA/div
200mA
IOUT
20mA
200mA/div
VOUT
20mV/div
AC-COUPLED
VIN = 3.6V
VOUT = 1.5V
20µs/div
SHUTDOWN RESPONSE
MAX1963/76 toc13
VSHDN
0
1V/div
VOUT
0
100µs/div
500mV/div
20mV/div
VOUT AC-COUPLED
VIN = 1.8V
VOUT = 1.5V
20µs/div
MAX1976
SHUTDOWN/RESET RESPONSE
MAX1963/76 toc14
VSHDN
0
VOUT
0
VRESET
0
40ms/div
1V/div
1V/div
1V/div
MAX1976
LINE/RESET RESPONSE
MAX1963/76 toc15
VIN
0
VOUT
0
VRESET
0
2V/div
1V/div
1V/div
200ms/div
_______________________________________________________________________________________ 5
5 Page 
Low-Input-Voltage, 300mA LDO Regulators
with RESET in SOT and TDFN
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
1
PIN 1
INDEX
AREA
D
A
A2
L
D2
PIN 1 ID
N1
C0.35
b
E E2
[(N/2)-1] x e
REF.
DETAIL A
e
A1 k
CL
L
e
A
NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY
CL
L
e
DALLAS
SEMICONDUCTOR
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, 6, 8 & 10L,
TDFN, EXPOSED PAD, 3x3x0.80 mm
APPROVAL
DOCUMENT CONTROL NO.
21-0137
REV.
D
1
2
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX1963.PDF ] | |
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