Storage Temperature Range ............................ -60°C to +150°C
Lead Temperature (soldering, 10s) ................................. +300°C
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.
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.
DC Electrical Characteristics
(For devices with V
OUT
≤ 1.5V, V
IN
= 3.3V. For devices with V
OUT
> 1.5V, V
IN
= 5V. EN = IN, T
J
= -40°C to +125°C, C
IN
= 1μF, C
OUT
= 4.7μF, C
CRES
= 1000pF, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
IN Operating Voltage
IN Undervoltage-Lockout (UVLO)
Threshold
IN UVLO Hysteresis
V
OUT
≤ 1.5V,
I
OUT
= 1mA to 80mA
V
OUT
> 1.5V,
I
OUT
= 1mA to 100mA
-2.5
-2.5
105
150
13
23
0.035
0.1
0.4
mV/V
1.8
70
40
dB
0.1
20
SYMBOL
V
IN
V
UVLO
V
IN
rising
CONDITIONS
MIN
2.5
1.94
45
+2.5
%
+2.5
mA
µA
V
mV/mA
TYP
MAX
5.5
2.2
UNITS
V
V
mV
Output-Voltage Accuracy
V
IN
= V
OUT
+ 2V
I
LIM
I
Q
V
IN
- V
OUT
OUT = GND
I
OUT
= 100µA
I
OUT
= 100mA
Current Limit
Ground Current
Dropout Voltage
Load Regulation
I
OUT
= 80mA, V
OUT
= 3.3V (Note 3)
V
OUT
< 1V,
2.5V < V
IN
< 5.5V
V
OUT
≥ 1V, (V
OUT
+
1.5V) < V
IN
< 5.5V
f = 100Hz
f = 100kHz
ΔV
OUT
/ΔI
OUT
I
OUT
= 1mA to 80mA
ΔV
OUT
/ΔV
IN
I
OUT
= 80mA
I
OUT
= 10mA,
500mV
P-P
, V
IN
-
V
OUT
> 1.5V
Line Regulation
Power-Supply Rejection Ratio
PSRR
www.maximintegrated.com
Maxim Integrated
│
2
MAX16999
Ultra-Low Output Voltage, Low-Quiescent-Current
Linear Regulator for High-Temperature Applications
DC Electrical Characteristics (continued)
(For devices with V
OUT
≤ 1.5V, V
IN
= 3.3V. For devices with V
OUT
> 1.5V, V
IN
= 5V. EN = IN, T
J
= -40°C to +125°C, C
IN
= 1μF, C
OUT
= 4.7μF, C
CRES
= 1000pF, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER
EN
Standby Current
Turn-On Delay
Logic Levels
Pullup Resistance
Pulldown Resistance
RESET
Threshold Accuracy
Threshold Hysteresis
RESET
Open-Drain Leakage
Output Low Voltage
RESET
Timeout
Output Deglitch Time
CRES
Charge Current
Discharge Current
Threshold
THERMAL PROTECTION
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
T
SHDN
ΔT
SHDN
+165
15
°C
°C
I
CRES,UP
I
CRES,DN
V
CRES,THRS
RESET
goes from low to high impedance
8
1
575
600
625
10
12
µA
mA
mV
V
RES,OL
t
RSOFF
t
DEGLITCH
EN
H
EN
L
R
EN-H
R
EN-L
V
RES
V
RES,HYST
RESET
= high impedance, V
RESET
= 5mV
I
LOAD
= 250µA
CRES = GND
V
OUT
< V
RES
30
30
I
STB
EN = GND
From EN = high to V
OUT
= 100mV
Circuit active
Circuit inactive
V
EN
= 75% V
IN
V
EN
= 25% V
IN
V
OUT
falling
79.5
120
120
82.5
2.5
200
100
80
85.5
70
30
0.3
10
1
µA
µs
%V
IN
kΩ
kΩ
%V
OUT
%V
OUT
nA
mV
ms
µs
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Note 2:
Limits are 100% production tested at T
A
= +25°C. Limits over the operating temperature range are guaranteed by design.
Note 3:
Dropout voltage is defined as V
IN
- V
OUT
when V
OUT
is 2% below its value for V
IN
= V
OUT
+ 2V.
www.maximintegrated.com
Maxim Integrated
│
3
MAX16999
Ultra-Low Output Voltage, Low-Quiescent-Current
Linear Regulator for High-Temperature Applications
Typical Operating Characteristics
(For devices with V
OUT
< 1.5V, V
IN
= 3.3V. For devices with V
OUT
> 1.5V, V
IN
= 5V. EN = IN, C
IN
= 1μF, C
OUT
= 4.7μF, C
CRES
= 1000pF,
T
A
= + 25°C, unless otherwise noted.)
OUTPUT-VOLTAGE ACCURACY
vs. LOAD CURRENT
MAX16999 toc01
MAX16999 toc02
OUTPUT-VOLTAGE ACCURACY (%)
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
20
V
OUT
= 3.3V
40
60
80
V
OUT
= 1V
V
OUT
= 0.5V
1.002
OUTPUT VOLTAGE (V)
1.001
1.000
0.999
0.998
0.997
0.996
0.995
0.994
OUTPUT-VOLTAGE ACCURACY (%)
0.4
1.003
I
OUT
= 0.1mA
I
OUT
= 1mA
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
V
OUT
= 1V
I
OUT
= 0.1mA
I
OUT
= 1mA
I
OUT
= 100mA
I
OUT
= 50mA
I
OUT
= 50mA
2.5
3.0
3.5
4.0
I
OUT
= 100mA
4.5
5.0
5.5
100
-50
0
50
100
150
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
TEMPERATURE (°C)
MAX16999 toc04
MAX16999 toc05
35
GROUND-PIN CURRENT (µA)
30
25
20
15
10
5
0
0
20
40
60
80
V
OUT
= 0.5V
V
OUT
= 1V
V
OUT
= 3.3V
45
GROUND-PIN CURRENT (µA)
40
35
30
25
20
15
10
5
V
OUT
= 0.5V
I
OUT
= 100mA
I
OUT
= 50mA
I
OUT
= 100mA
I
OUT
= 50mA
GROUND-PIN CURRENT (µA)
25
20
15
10
5
0
I
OUT
= 0.1mA
I
OUT
= 1mA
I
OUT
= 0.1mA
0
1
2
3
I
OUT
= 1mA
4
5
6
100
0
V
OUT
= 1V
-50
-25
0
25
50
75
100 125 150
TEMPERATURE (°C)
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
MAX16999 toc07
MAX16999 toc08
165
CURRENT LIMIT (mA)
160
155
150
145
140
135
130
2.5
3.0
3.5
4.0
4.5
5.0
90
DROPOUT VOLTAGE (mA)
80
70
50
40
30
20
10
0
60
V
OUT
= 3.3V
70
60
PSRR (dB)
50
40
30
20
10
V
OUT
= 0.5V, I
OUT
= 10mA
0.01
0.1
1
10
100
5.5
0
25
50
75
100
125
150
0
1000
INPUT VOLTAGE (V)
LOAD CURRENT (mA)
FREQUENCY (kHz)
www.maximintegrated.com
Maxim Integrated
│
4
MAX16999 toc09
170
CURRENT LIMIT
vs. INPUT VOLTAGE
100
DROPOUT VOLTAGE
vs. LOAD CURRENT
80
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX16999 toc06
40
GROUND-PIN CURRENT
vs. LOAD CURRENT
50
GROUND-PIN CURRENT
vs. INPUT VOLTAGE
30
GROUND-PIN CURRENT
vs. TEMPERATURE
MAX16999 toc03
0.5
1.004
OUTPUT VOLTAGE
vs. INPUT VOLTAGE
0.5
OUTPUT-VOLTAGE ACCURACY
vs. TEMPERATURE
MAX16999
Ultra-Low Output Voltage, Low-Quiescent-Current
Linear Regulator for High-Temperature Applications
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