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MAX5086BATE+

P1-P3P4-P6P7-P9P10-P12P13-P13
General Description
The MAX5086 high-voltage linear regulator operates
from a 6.5V to 45V input voltage and delivers up to a
250mA output current. The device consumes only 70µA
of quiescent current with no load and 13µA in shut-
down. The device includes a SET input, that when con-
nected to ground, selects a preset output voltage of
3.3V (MAX5086A) or 5.0V (MAX5086B). Alternatively,
the output voltage can be adjusted from 2.5V to 11V by
simply connecting SET to the regulator’s output through
a resistive divider network. The MAX5086 also provides
an open-drain, active-low microprocessor reset output
that asserts when the regulator output drops below the
preset output voltage threshold. An external capacitor
programs the reset timeout period. Other features
include an enable input, thermal shutdown, and short-
circuit protection.
The MAX5086 operates over the automotive tempera-
ture range of -40°C to +125°C and is available in a
16-pin TQFN thermally enhanced package.
Applications
Automotive
Industrial
Home Security/Safety
Networking
Features
♦ Wide Operating Input Voltage Range (6.5V to 45V)
♦ Thermally Enhanced Package Dissipates
2.6W at T
A
= +70°C (16-Pin TQFN)
♦ Guaranteed 250mA Output Current
♦ 70µA Quiescent Supply Current
♦ Preset 3.3V, 5.0V, or Adjustable 2.5V to 11V
Output Voltage
♦ Remote Load Sense
♦ Integrated Microprocessor Reset Circuit with
Programmable Timeout Period
♦ Thermal and Short-Circuit Protection
♦ -40°C to +125°C Operating Temperature Range
MAX5086
45V, 250mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
________________________________________________________________
Maxim Integrated Products
1
12
+
11 10 9
5
6
7
8
OUT
OUT
OUTSENSE
GND
TOP VIEW
16
15
14
13
N.C.
N.C.
N.C.
N.C.
1234
EN
N.C.
IN
IN
MAX5086
N.C.
CT
RESET
SET
TQFN
Pin Configuration
Ordering Information
19-3878; Rev 2; 2/08
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 are specified over the -40°C to +125°C oper-
ating temperature range.
+
Denotes lead-free package.
*
EP = Exposed paddle.
EVALUATION KIT
AVAILABLE
PART
PIN-
PACKAGE
OUTPUT
VOLTAGE (V)
PKG
CODE
MAX5086AATE+ 16 TQFN-EP*
3.3 T1655-2
MAX5086AATE 16 TQFN-EP*
3.3 T1655-2
MAX5086BATE+ 16 TQFN-EP*
5.0 T1655-2
MAX5086BATE 16 TQFN-EP*
5.0 T1655-2
MAX5086
45V, 250mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= 14V, I
OUT
= 1mA, C
IN
= 47µF (low ESR), C
OUT
= 15µF, V
EN
= 2.4V, 10kΩ from RESET to OUT, T
A
= T
J
= -40°C to +125°C,
unless otherwise noted. Typical specifications are at T
A
= +25°C.) (Note 2)
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 to GND (do not exceed
package power dissipation)...............................-0.3V to +50V
IN to GND (T ≤ 300ms, I
OUT
≤ 250mA) ..................-0.3V to +42V
EN to GND..............................................................-0.3V to +50V
RESET, OUT, OUTSENSE to GND .........................-0.3V to +12V
CT, SET to GND.....................................................-0.3V to +3.5V
IN to OUT................................................................-0.3V to +50V
Short-Circuit Duration (V
IN
< 16V) .............................Continuous
Maximum Current into Any Pin (except IN, OUT).............±20mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin TQFN (derate 33.3mW/°C above +70°C) .......2666mW
Thermal Resistance (Note 1):
(θ
JA
, 16-Pin TQFN)....................................................30.0°C/W
(θ
JC
, 16-Pin TQFN).........................................................2°C/W
Operating Temperature Range .........................-40°C to +125°C
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
Input Voltage Range V
IN
V
IN
≥ V
OUT
+ 1.5V 6.5 45 V
I
OUT
= 0 70 115
Supply Current I
Q
Measured at GND,
SET = GND
I
OUT
= 250mA 1250
µA
Shutdown Supply Current I
SHDN
V
EN
≤ 0.4V 13 21 µA
REGULATOR
Guaranteed Output Current I
OUT
V
IN
= 6.5V, V
OUT
= 5.0V 250 mA
6.5V ≤ V
IN
≤ 25V,
5mA ≤ I
OUT
≤ 250mA
4.85 5 5.15
SET = GND,
5V Version
6.5V ≤ V
IN
≤ 45V,
5mA ≤ I
OUT
≤ 100mA
4.85 5 5.15
6.5V ≤ V
IN
≤ 25V,
5mA ≤ I
OUT
≤ 250mA
3.217 3.3 3.392
SET = GND,
3.3V version
6.5V ≤ V
IN
≤ 45V,
5mA ≤ I
OUT
≤ 100mA
3.217 3.3 3.392
Output Voltage (Note 3) V
OUT
I
OUT
= 5mA, adjustable range 2.5 11.0
V
Dropout Voltage (Note 4) ΔV
DO
I
OUT
= 250mA, V
OUT
= 5V 0.9 2.2 V
Startup Response Time (Note 5)
Rising edge of V
IN
to V
OUT
,
R
L
= 500Ω, SET = GND
400 µs
5V version -1 +1
Line Regulation
ΔV
OUT
/
ΔV
IN
6.5V ≤ V
IN
≤ 45V
3.3V version -0.5 +0.8
mV/V
V
EN
= high, regulator on 2.4
Enable Voltage V
EN
V
EN
= low, regulator off 0.4
V
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7 using a four-layer
board. For detailed information on thermal considerations, refer to www.maxim-ic.com/thermal-tutorial
.
MAX5086
45V, 250mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
_______________________________________________________________________________________ 3
Note 2: Limits at -40°C are guaranteed by design.
Note 3: Output voltage is tested using a pulsed load current of less than 50ms duration.
Note 4: Dropout voltage is defined as (V
IN
- V
OUT
) when V
OUT
is 100mV below the value of V
OUT
for V
IN
= V
OUT
+ 3V.
Note 5: Startup time measured from 50% of V
IN
to 90% of V
OUT
.
Note 6: Continuous short-circuit protection for V
IN
> 16V not guaranteed.
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 14V, I
OUT
= 1mA, C
IN
= 47µF (low ESR), C
OUT
= 15µF, V
EN
= 2.4V, 10kΩ from RESET to OUT, T
A
= T
J
= -40°C to +125°C,
unless otherwise noted. Typical specifications are at T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
EN
= 2.4V 0.38
Enable Input Current I
EN
V
EN
= 14V 3.75
µA
SET Reference Voltage V
SET
1.20 1.235 1.26 V
SET Input Leakage Current I
SET
-100 -1.5 100 nA
Load Regulation
ΔV
OUT
/
ΔI
OUT
I
OUT
= 1mA to 250mA 0.045 0.4 Ω
Power-Supply Rejection Ratio PSRR
I
OUT
= 10mA, f = 100Hz, 500mV
P-P
,
V
OUT
= 5V
-54 dB
Short-Circuit Current (Note 6) I
SC
V
IN
< 16V 440 mA
Thermal Shutdown Temperature T
J
(
SHDN
)
175 °C
Thermal Shutdown Hysteresis ΔT
J
(
SHDN
)
25 °C
RESET Voltage Threshold V
RESET
89.91 92 94.10 % V
OUT
RESET Threshold Hysteresis V
RHYST
2% V
OUT
RESET Output Low Voltage V
RL
I
SINK
= 1mA 0.4 V
RESET Output Leakage Current I
RH
V
RESET
= 5V 1 µA
RESET Output Minimum Timeout
Period
When V
OUT
reaches RESET threshold,
C
CT
= Open
15 µs
ENABLE to RESET Minimum
Timeout Period
When EN goes high, C
CT
= open 169 µs
Delay Comparator Threshold
(Rising)
1.196 1.23 1.264 V
Delay Comparator Threshold
Hysteresis
100 mV
CT Charge Current 1 2.26 4 µA
CT Discharge Current 5mA
P1-P3P4-P6P7-P9P10-P12P13-P13

MAX5086BATE+

Mfr. #:
Buy MAX5086BATE+
Manufacturer:
Maxim Integrated
Description:
Linear Voltage Regulators 65V 200mA Low-Q
Lifecycle:
New from this manufacturer.
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