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MAX5091AATA+T

P1-P3P4-P6P7-P9P10-P12P13-P15
General Description
The MAX5091 high-voltage linear regulator is designed
to operate from a +5V to +28V input voltage, and with-
stands up to 40V transients. The device consumes only
45µA of quiescent current at 100µA output current. The
MAX5091 delivers up to 100mA of output current with
low 50mV maximum dropout voltage. The MAX5091
provides an active-low open-drain microprocessor
RESET output. The reset timeout period is programma-
ble and can be set with an external capacitor. The
MAX5091 includes an uncommitted comparator for
input voltage monitoring/power-fail indication. The
device is available with a fixed +5V (MAX5091A) or
+3.3V (MAX5091B) output. The MAX5091 is short-cir-
cuit protected and includes thermal shutdown.
The MAX5091 operates over the -40°C to +125°C auto-
motive temperature range and is available in 8-pin,
thermally enhanced TDFN and SO-EP packages.
Applications
Features
♦ +5V to +28V Wide Operating Input Voltage Range
♦ Withstands 40V Input Voltage Transients
♦ Guaranteed 100mA Output Current
♦ 45µA Typical Quiescent Current at 100µA Output
Current
♦ Preset +5V (MAX5091A) or +3.3V (MAX5091B)
Output Voltage
♦ Stable with Only 10µF Output Capacitance
♦ RESET Output with Adjustable Timeout Period
♦ Uncommitted Comparator for Voltage
Monitoring/Power-Fail Indication
♦ Output Overload and Short-Circuit Protection
♦ Thermal Shutdown
♦ Available in 8-Pin TDFN (1.95W at T
A
= +70°C) and
8-Pin SO (1.5W at T
A
= +70°C)
♦ Operates Over -40°C to +125°C Automotive
Temperature Range
MAX5091
28V, 100mA, Low-Quiescent-Current LDO
with Reset and Power-Fail Input/Output
________________________________________________________________ Maxim Integrated Products 1
134
8
+
65
V
OUT
RES GND
MAX5091
EXPOSED PADDLE
2
7
SO
V
S
EN CTSI
TDFN
(3mm x 3mm)
TOP VIEW
Pin Configurations
Ordering Information
μC
RESET
CT
SI
+5V TO +28V
R
H
288kΩ
C
IN
10μF
C
CT
0.1μF
C
OUT
10μF
R
L
100kΩ
+5V (MAX5091A)/
+3.3V (MAX5091B)
100mA
SO
GND
EN
R
RES
10kΩ
V
OUT
RES
POWER-
FAIL
V
S
ON
OFF
V
IN
MAX5091
R
SO
10kΩ
Typical Application Circuit
19-0654; Rev 0; 11/06
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.
Note: All devices specified for -40°C to +125°C operating temperature range.
+Denotes lead-free package. *EP = Exposed paddle.
PART
PIN-
PACKAGE
PRESET V
OUT
(V)
PKG
CODE
TOP
MARK
MAX5091AATA+T 8 TDFN-8 5
T833-2
+APB
MAX5091AASA+ 8 SO-EP* 5
S8E-14
—
MAX5091BATA+T 8 TDFN-8 3.3
T833-2
+APC
MAX5091BASA+ 8 SO-EP* 3.3
S8E-14
—
Pin Configurations continued at end of data sheet.
Automotive
Industrial
Home Security/Safety
Telecom/Networking
MAX5091
28V, 100mA, Low-Quiescent-Current LDO
with Reset and Power-Fail Input/Output
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS (MAX5091A)
(V
S
= +14V, V
OUT
= 5V, EN unconnected, T
A
= T
J
= -40°C to +125°C, C
IN
= 10µF, C
OUT
= 10µF, unless otherwise noted. Typical
specifications are at T
A
= +25°C.) (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.
V
S
to GND ..............................................................-0.3V to +28V
V
S
to GND (t ≤ 1s) ..................................................-0.3V to +40V
V
OUT
to GND ..........................................................-0.3V to +20V
V
S
to OUT ...............................................................-0.3V to +28V
RES, SO to GND.....................................................-0.3V to +20V
RES, SO Output Sink Current................................................5mA
V
OUT
Short Circuit (V
S
≤ 16V)………… ......................Continuous
EN, SI to GND.........................................................-0.3V to +12V
CT to GND.............................-0.3V to the lower of V
OUT
or +12V
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO-EP (derate 19.2mW/°C above +70°C) .........1538mW*
Thermal Resistance (θ
JA
)................................................52°C/W
Thermal Resistance (θ
JC
)..................................................6°C/W
8-Pin TDFN-EP (derate 24.4mW/°C above +70°C).....1951mW**
Thermal Resistance (θ
JA
)................................................41°C/W
Thermal Resistance (θ
JC
)...............................................8.3°C/W
Operating Junction Temperature Range...........-40°C to +125°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
T
A
= +25°C, I
OUT
= 1mA 4.95 5 5.05
5.6V ≤ V
S
≤ 28V, I
OUT
= 1mA to 50mA (Note 2) 4.90 5 5.10
5.6V ≤ V
S
≤ 40V, t ≤ 1s, I
OUT
= 1mA to 30mA
(Note 2)
4.9 5 5.1
Output Voltage V
OUT
V
S
= +8V, I
OUT
= 1mA to 100mA 4.9 5 5.1
V
I
OUT
= 10mA 0.1 0.25
I
OUT
= 50mA 0.2 0.4
Dropout Voltage V
DP
V
S
= +4.75V
I
OUT
= 100mA 0.3 0.5
V
V
S
to V
OUT
Difference in
Undervoltage
V
IO
V
S
= +4V, I
OUT
= 35mA 0.4 V
Line Regulation V
OL
+5.5V ≤ V
S
≤ +28V, I
OUT
= 1mA 0.6 5 mV
Load Regulation V
OLO
1mA ≤ I
OUT
≤ 100mA 17 50 mV
Current Limit I
LIM
160 260 400 mA
I
OUT
= 100µA 46 100
I
OUT
= 300µA 45 100
µA
Quiescent Current I
Q
I
OUT
= 100mA 4.5 10 mA
Shutdown Supply Current I
SHDN
V
EN
≤ +0.4V 17 30 µA
Thermal-Shutdown
Temperature
T
J
(
SHDN
)
Temperature rising +165 °C
Thermal-Shutdown
Hysteresis
ΔT
J
(
SHDN
)
20 °C
*As per JEDEC51 Standard (single-layer board).
**As per JEDEC51 Standard (multilayer board).
MAX5091
28V, 100mA, Low-Quiescent-Current LDO
with Reset and Power-Fail Input/Output
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (MAX5091A) (continued)
(V
S
= +14V, V
OUT
= 5V, EN unconnected, T
A
= T
J
= -40°C to +125°C, C
IN
= 10µF, C
OUT
= 10µF, unless otherwise noted. Typical
specifications are at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RESET
Reset Threshold Voltage V
RT
V
OUT
falling 85 90 94.5 %V
OUT
Reset Threshold
Hysteresis
V
RTH
30 65 100 mV
Reset Pulse Delay t
RD
C
CT
= 100nF, t
R
≥ 100µs 55 110 180 ms
RES Output Low Voltage V
RL
V
S
≥ +1.5V,R
RES
= 10kΩ to V
OUT
0.4 V
RES Output High
Leakage Current
I
RH
V
RES
= 5V 1.0 µA
Delay Comparator
Threshold
V
CTTH
V
CT
rising 1.9 2.1 2.4 V
Delay Comparator
Threshold Hysteresis
100 mV
SENSE
Sense Threshold V
ST
V
SI
falling 1.10 1.16 1.24 V
Sense Threshold
Hysteresis
50 100 150 mV
Sense Output
Low Voltage
V
SL
V
SI
≤ 1.10V, V
S
≥ 4V, R
SO
= 10kΩ to V
OUT
0.4 V
Sense Output
Leakage Current
I
SH
V
SO
= 5V, V
SI
≥ 1.5V 1 µA
Sense Input Current I
SI
V
SI
= 3.3V -1 +1 µA
ENABLE
EN = high, regulator on 2.4
Enable Voltage V
EN
EN = low, regulator off 0.4
V
Enable Internal
Pullup Current
I
EN
EN is internally pulled up to 3.6V (max) 3 µA
P1-P3P4-P6P7-P9P10-P12P13-P15

MAX5091AATA+T

Mfr. #:
Buy MAX5091AATA+T
Manufacturer:
Maxim Integrated
Description:
LDO Voltage Regulators 28V 100mA Low-Q LDO
Lifecycle:
New from this manufacturer.
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