MAX15027ATB+T Maxim Integrated Products, MAX15027ATB+T Datasheet

IC LDO REG ADJ 1A 10-TDFN

MAX15027ATB+T

Manufacturer Part Number
MAX15027ATB+T
Description
IC LDO REG ADJ 1A 10-TDFN
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX15027ATB+T

Regulator Topology
Positive Adjustable
Voltage - Output
0.5 ~ 3.3 V
Voltage - Input
1.43 ~ 3.6 V
Voltage - Dropout (typical)
0.075V @ 1A
Number Of Regulators
1
Current - Output
1A
Current - Limit (min)
1.4A
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
10-TDFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
MAX15027ATB+T
MAX15027ATB+TTR
The MAX15027/MAX15028 low-dropout linear regulators
operate from input voltages as low as 1.425V and deliver
up to 1A of continuous output current with a typical
dropout voltage of only 75mV. The output voltage is
adjustable from 0.5V to V
and line variations, from -40°C to +125°C. The MAX15028
features a BIAS input of 3V to 5.5V from an always-on
power supply. The BIAS input current is reduced down to
less than 2µA during shutdown.
These regulators use small, 1µF ceramic input capaci-
tors and 4.7µF ceramic output capacitors to deliver 1A
output current. High bandwidth provides excellent tran-
sient response and limits the output voltage deviation to
15mV for a 500mA load step, with only a 4.7µF ceramic
output capacitor, and the voltage deviations can be
reduced further by increasing the output capacitor.
These devices offer a logic-controlled shutdown input
to reduce input current (I
than 5.5µA in standby mode. Other features include a
soft-start to reduce inrush current, short-circuit protec-
tion, and thermal-overload protection.
The MAX15028 features a BIAS input allowing a sec-
ondary supply to keep the LDO’s internal circuitry alive
if the voltage on IN goes to 0V. Both devices are fully
specified from -40°C to +125°C and are available in a
10-pin thermally enhanced TDFN package (3mm x
3mm) that includes an exposed pad for optimal power
dissipation. For a 500mA version of these LDOs, refer
to the MAX15029/MAX15030 data sheet.
19-4488; Rev 1; 5/10
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.
Typical Operating Circuits appear at end of data sheet.
Automotive (Dead-Man LDO)
Servers
Storage
Networking
Base Stations
Optical Modules
ATE
________________________________________________________________ Maxim Integrated Products
General Description
IN
1.425V to 3.6V Input, 1A Low-Dropout
IN
and is ±2% accurate over load
) consumption down to less
Applications
Regulators with BIAS Input
o 1.425V to 3.6V Input Voltage Range
o Output Voltage Programmable from 0.5V to V
o Guaranteed Maximum 225mV Dropout at 1A
o ±2% Output Accuracy Over Load, Line, and
o Stable with Ceramic Capacitors
o Fast Transient Response
o 60µA Operating Bias Supply Current (MAX15028)
o 1.2µA Shutdown Bias Supply Current (MAX15028)
o Short-Circuit and Thermal Protection
o -40°C to +125°C Operating Temperature Range
o Soft-Start Limits Inrush Current
o Thermally Enhanced 3mm x 3mm TDFN Package
o AEC-Q100 Qualified
+ Denotes a lead(Pb)-free/RoHS-compliant package.
For tape-and-reel orders, add a “T” after the “+”.
* EP = Exposed pad.
/V denotes an automotive qualified part.
MAX15027ATB+T
MAX15027ATB/V+T
MAX15028ATB+T
Pin Configurations continued at end of data sheet.
Output Current
Temperature
TOP VIEW
PART
I.C.
EN
IN
IN
IN
1
2
3
4
5
- 40°C to + 125°C 10 TDFN-EP*
- 40°C to + 125°C 10 TDFN-EP*
- 40°C to + 125°C 10 TDFN-EP*
TEMP RANGE
Ordering Information
+
(3mm x 3mm)
Pin Configurations
MAX15027
TDFN
PIN-
PACKAGE
EP
10
Features
9
8
7
6
OUT
OUT
GND
FB
SS
MARK
+AWC
+AUD
+AUE
TOP
IN
1

Related parts for MAX15027ATB+T

MAX15027ATB+T Summary of contents

Page 1

... Short-Circuit and Thermal Protection o -40°C to +125°C Operating Temperature Range o Soft-Start Limits Inrush Current o Thermally Enhanced 3mm x 3mm TDFN Package o AEC-Q100 Qualified PART MAX15027ATB+T MAX15027ATB/V+T MAX15028ATB+T + Denotes a lead(Pb)-free/RoHS-compliant package. For tape-and-reel orders, add a “T” after the “+” Exposed pad. ...

Page 2

Input, 1A Low-Dropout Regulators with BIAS Input ABSOLUTE MAXIMUM RATINGS IN, FB, SS, I.C. to GND..........................................-0.3V to +4.0V BIAS to GND.............................................................-0. GND ................-0.3V to the lower of (V OUT to GND ................................................-0.3V to ...

Page 3

Input, 1A Low-Dropout ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 1.8V 1.2V for MAX15027 BIAS for MAX15028 OUT +125°C. Typical values are +25°C, ...

Page 4

Input, 1A Low-Dropout Regulators with BIAS Input (Circuit of Figure 1.8V 1.5V OUT MAX15028 OUTPUT VOLTAGE vs. INPUT VOLTAGE 1.6 1.4 1.2 1.0 0.8 0.6 0 OUT ...

Page 5

Input, 1A Low-Dropout (Circuit of Figure 1.8V 1.5V OUT POWER-UP RESPONSE V OUT OUT 2ms/div TURN-ON VIA ENABLE RESPONSE V OUT OUT 20µs/div POWER-SUPPLY ...

Page 6

Input, 1A Low-Dropout Regulators with BIAS Input (Circuit of Figure 1.8V 1.5V OUT OVERCURRENT THRESHOLD vs. TEMPERATURE 1.80 1.78 1.76 1.74 1.72 1.70 1.68 1.66 1.64 1.62 1.60 -40 -20 ...

Page 7

Input, 1A Low-Dropout IN MAX15028 ONLY BIAS INTERNAL BIAS SUPPLY UVLO GENERATOR REF EN Detailed Description The MAX15027/MAX15028 low-dropout linear regula- tors operate from input voltages as low as 1.425V and deliver continuous ...

Page 8

Input, 1A Low-Dropout Regulators with BIAS Input Internal p-Channel Pass Transistor The MAX15027/MAX15028 feature a 75mΩ (typ) p-channel MOSFET pass transistor. Unlike similar designs using pnp pass transistors, p-channel MOSFETs require no base drive, reducing quiescent current. ...

Page 9

Input, 1A Low-Dropout Capacitor Selection and Regulator Stability Capacitors are required at the MAX15027/MAX15028’s inputs and outputs for stable operation over the full temperature range and with load currents up to 1A. Connect a 1µF capacitor between ...

Page 10

Input, 1A Low-Dropout Regulators with BIAS Input INPUT IN 1.425V TO 3.6V 1μF MAX15027 EN SS Pin Configurations (continued) TOP VIEW + BIAS 3 MAX15028 I. TDFN (3mm x 3mm) ...

Page 11

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 © 2010 Maxim Integrated Products ...

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