Storage Temperature Range..............................-60°C to +150°C
Lead Temperature (soldering, 10s)...................................+300°C
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.
Package Thermal Characteristics
(Note 1)
TQFN
Junction-to-Ambient Thermal Resistance (θ
JA
)........30.0°C/W
Junction-to-Case Thermal Resistance (θ
JC
)..................2°C/W
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 package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
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)
PARAMETER
Input Voltage Range
Supply Current
Shutdown Supply Current
REGULATOR
Guaranteed Output Current
I
OUT
V
IN
= 6.5V, V
OUT
= 5.0V
SET = GND,
5V version
Output Voltage (Note 3)
V
OUT
SET = GND,
3.3V version
6.5V P V
IN
≤ 25V,
5mA P I
OUT
≤ 400mA
6.5V P V
IN
≤ 45V,
5mA P I
OUT
≤ 100mA
6.5V P V
IN
≤ 25V,
5mA P I
OUT
≤ 400mA
6.5V P V
IN
≤ 45V,
5mA P I
OUT
≤ 100mA
400
4.87
4.850
3.208
3.208
2.5
0.9
400
-1
-0.5
2.4
0.4
+1
+0.5
5
5
3.3
3.3
5.13
5.150
3.392
3.392
11.0
2.2
V
µs
mV/V
V
V
mA
SYMBOL
V
IN
I
Q
I
SHDN
CONDITIONS
V
IN
≥ V
OUT
+ 1.5V
Measured at GND, I
OUT
= 0
SET = GND
I
OUT
= 400mA
V
EN
P 0.4V
MIN
6.5
70
5300
11
21
TYP
MAX
45.0
150
UNITS
V
µA
µA
I
OUT
= 5mA, adjustable range
Dropout Voltage
Startup Response Time
Line Regulation
Enable Voltage
ΔV
OUT
/
ΔV
IN
V
EN
Δ
VDO
I
OUT
= 400mA, V
OUT
= 5V (Note 4)
Rising edge of V
IN
to V
OUT
,
R
L
= 500Ω, SET = GND (Note 5)
8V ≤ V
IN
≤ 45V
5V version
3.3V version
V
EN
= high, regulator on
V
EN
= low, regulator off
www.maximintegrated.com
Maxim Integrated │ 2
MAX5087
45V, 400mA, Low-Quiescent-Current
Linear Regulator with Adjustable Reset Delay
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
Enable Input Current
SET Reference Voltage
SET Input Leakage Current
Load Regulation
Power-Supply Rejection Ratio
Short-Circuit Current
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
RESET
Voltage Threshold
RESET
Threshold Hysteresis
RESET
Output Low Voltage
RESET
Output Leakage Current
RESET
Output Minimum Timeout
Period
ENABLE to
RESET
Minimum
Timeout Period
Delay Comparator Threshold
(Rising)
Delay Comparator Threshold
Hysteresis
CT Charge Current
CT Discharge Current
Note
Note
Note
Note
Note
2:
3:
4:
5:
6:
1
SYMBOL
I
EN
V
SET
I
SET
ΔV
OUT
/
ΔI
OUT
PSRR
I
SC
T
J(SHDN)
ΔT
J(SHDN)
V
RESET
V
RHYST
V
RL
I
RH
I
SINK
= 1mA
V
RESET
= 5V
When V
OUT
reaches
RESET
threshold,
C
CT
= Open
When EN goes high, C
CT
= open
1.196
15
170
1.230
100
2
5
4
1.264
89
I
OUT
= 1mA to 400mA (Note 3)
I
OUT
= 10mA, f = 100Hz, 500mV
P-P
,
V
OUT
= 5V
V
IN
< 14V (Note 6)
V
EN
= 2.4V
V
EN
= 14V
1.200
-100
CONDITIONS
MIN
TYP
0.35
3.4
1.235
+0.5
0.1
70
640
175
25
92
2
0.4
1
94
1.260
+100
0.35
MAX
UNITS
µA
V
nA
Ω
dB
mA
°C
°C
% V
OUT
% V
OUT
V
µA
µs
µs
V
mV
µA
mA
Limits at T
A
= -40°C are guaranteed by design.
Output voltage is tested using a pulsed load current of less than 50ms duration.
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