MAX1735EUK25-T Maxim Integrated Products, MAX1735EUK25-T Datasheet

IC REG LIN NEG 200MA LDO SOT23-5

MAX1735EUK25-T

Manufacturer Part Number
MAX1735EUK25-T
Description
IC REG LIN NEG 200MA LDO SOT23-5
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX1735EUK25-T

Regulator Topology
Negative Fixed or Adjustable
Voltage - Output
-2.5V, -1.25 ~ -5.5 V
Voltage - Input
-2.5 ~ -6.5 V
Voltage - Dropout (typical)
0.08V @ 200mA
Number Of Regulators
1
Current - Output
200mA (Min)
Current - Limit (min)
1.02A
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
The MAX1735 negative-output, low-dropout linear regu-
lator operates from a -2.5V to -6.5V input and delivers a
guaranteed 200mA with a low 80mV dropout. The high-
accuracy (±1%) output voltage is preset or can be
adjusted from -1.25V to -5.5V with an external resistive
voltage-divider.
An internal N-channel MOSFET allows for a low 85µA
quiescent current virtually independent of the load,
making this device ideal for battery-powered portable
equipment, such as PDAs, mobile phones, cordless
phones, and wireless data modems.
The device is available in several preset output voltage
versions: -5.0V, -3.0V, and -2.5V. All versions offer a
1nA low-power shutdown mode, short-circuit protec-
tion, and thermal overload protection. The device is
offered in a tiny 5-pin SOT23 package.
19-1783; Rev 1; 11/03
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.
GND
Disk Drives
Modems
Instrumentation Amplifiers
Notebook Computers
Mobile and Cordless Telephones
PCMCIA Cards
GaAsFET Bias
Mobile Wireless Data Modems
PDAs and Palmtop Computers
ON
-6.5V TO -2.5V
OFF
INPUT
C
ON
IN
Typical Operating Circuit
________________________________________________________________ Maxim Integrated Products
200mA, Negative-Output, Low-Dropout
General Description
IN
SHDN
MAX1735
GND
Applications
OUT
SET
-5V, -3V, OR -2.5V
UP TO 200mA
OUTPUT
C
OUT
Linear Regulator in SOT23
o Guaranteed 200mA Output Current
o Low 80mV Dropout Voltage at 200mA
o Low 85µA Quiescent Supply Current
o Low 1nA Current Shutdown Mode
o Stable with 1µF C
o PSRR >60dB at 100Hz
o Thermal Overload Protection
o Short-Circuit Protection
o -5.0V, -3.0V, or -2.5V Output Voltage
o Tiny SOT23-5 Package
MAX1735EUK50-T
MAX1735EUK30-T
MAX1735EUK25-T
MAX1735EUK50-T
MAX1735EUK30-T
MAX1735EUK25-T
or Adjustable (-1.25V to -5.5V)
TOP VIEW
PART
Output-Voltage Selector Guide
PART
SHDN
GND
IN
PRESET OUTPUT
OUT
1
2
3
Ordering Information
-5.0V or adj
-3.0V or adj
-2.5V or adj
VOLTAGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
SOT23-5
TEMP RANGE
MAX1735
Pin Configuration
5
4
OUT
SET
Features
SOT TOP
PIN-
PACKAGE
5 SOT23-5
5 SOT23-5
5 SOT23-5
MARK
ADOZ
ADOY
ADOX
1

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MAX1735EUK25-T Summary of contents

Page 1

... Short-Circuit Protection o -5.0V, -3.0V, or -2.5V Output Voltage or Adjustable (-1.25V to -5.5V) o Tiny SOT23-5 Package Applications PART MAX1735EUK50-T MAX1735EUK30-T MAX1735EUK25-T Output-Voltage Selector Guide PART MAX1735EUK50-T MAX1735EUK30-T MAX1735EUK25-T -5V, -3V, OR -2.5V TOP VIEW OUTPUT UP TO 200mA OUT C OUT SET Features OUT Ordering Information PIN- TEMP RANGE PACKAGE -40° ...

Page 2

Negative-Output, Low-Dropout Linear Regulator in SOT23 ABSOLUTE MAXIMUM RATINGS IN, SET to GND .................................................... -7.0V to +0.3V SHDN to GND ............................................ (V OUT to GND ...............................................(V Output Short-Circuit Duration ........................................Indefinite Continuous Power Dissipation (T = +70°C) A 5-Pin SOT23 ...

Page 3

Negative-Output, Low-Dropout (Circuit of Figure -4.0V -3.0V OUT SUPPLY CURRENT vs. SUPPLY VOLTAGE 180 I = 200mA LOAD 160 140 120 100 ...

Page 4

Negative-Output, Low-Dropout Linear Regulator in SOT23 (Circuit of Figure -4.0V -3.0V OUT POWER-SUPPLY REJECTION RATIO vs. FREQUENCY 10µF OUT 1.0µF OUT 10 ...

Page 5

... OUT to SET to set the output voltage between -1.25V and -5.5V. Regulation setpoint is -1.25V. Regulator Output. OUT supplies up to 200mA in regulation. Bypass to GND with a 1µF ceramic 5 OUT capacitor. Dual Mode is a trademark of Maxim Integrated Products, Inc. _______________________________________________________________________________________ Linear Regulator in SOT23 Typical Operating Characteristics (continued) = +25°C, unless otherwise specified.) A ...

Page 6

Negative-Output, Low-Dropout Linear Regulator in SOT23 SHUTDOWN LOGIC ON SHDN GND OFF ON V REF -1.25V Figure 1. Functional Diagram Detailed Description The MAX1735 is a low-dropout negative linear voltage regulator. It features Dual Mode operation, ...

Page 7

Negative-Output, Low-Dropout -6.5V TO -2.5V INPUT 1µF CERAMIC MAX1735 ON GND OFF SHDN ON GND Figure 2. Typical Application Circuit with Preset Output Voltage In adjustable mode, an output voltage between -5.5V and -1.25V is selected ...

Page 8

Negative-Output, Low-Dropout Linear Regulator in SOT23 MAXIMUM OUTPUT CURRENT vs. INPUT-OUTPUT VOLTAGE DIFFERENTIAL 250 MAXIMUM CONTINUOUS CURRENT 200 150 AT MAXIMUM 100 JUNCTION TEMP (T = +150° INPUT-OUTPUT VOLTAGE DIFFERENTIAL (V) ...

Page 9

Negative-Output, Low-Dropout Noise, PSRR, and Transient Response MAX1735 output noise is typically 160µV suitably low for most applications. See the Output Noise vs. Frequency plot in the Typical Operating Characteristics. The MAX1735 is optimized for battery-powered equip- ment, with ...

Page 10

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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