Operating Temperature Range ......................... -40°C to +125°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (Soldering, 10 seconds) .................... +300°C
Soldering Temperature (reflow) .......................................+260°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 Information
TDFN
PACKAGE CODE
Outline Number
Land Pattern Number
Thermal Resistance, Single-Layer Board:
Junction to Ambient (θ
JA
)
Junction to Case (θ
JC
)
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θ
JA
)
Junction to Case (θ
JC
)
102°C/W
8°C/W
130°C/W
8°C/W
21-0168
90-0065
T822+3C
WLP
PACKAGE CODE
Outline Number
Land Pattern Number
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θ
JA
)
Junction to Case (θ
JC
)
95.1°C/W
N/A
21-100183
Refer to
Application Note 1891
N60G1+1
For the latest package outline information and land patterns (footprints), go to
www.maximintegrated.com/packages.
Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
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.
www.maximintegrated.com
Maxim Integrated
│
3
MAX38902A/MAX38902B/
MAX38902C/MAX38902D
Electrical Characteristics
12μV
RMS
Low Noise 500mA
LDO Linear Regulator
(V
IN
= 3.6V, T
J
= -40°C to +125°C, C
BYP
= 10nF, C
IN
= 4.7µF, C
OUT
= 4.7µF,
Typical Operating Circuits.
Typical values are at T
J
= +25°C,
unless otherwise specified. (Note 1)
PARAMETER
Input Voltage Range
Input Undervoltage Lockout
Output Voltage Range
Output Capacitance
Supply Current
Output Accuracy
(MAX38902A/D Only)
Output Accuracy
(MAX38902B/C Only)
Load Regulation
Load Transient
Line Regulation
Line Transient
SYMBOL
V
IN
V
IN_UVLO
V
OUT
C
OUT
I
Q
I
SHUTDOWN
ACC
38902A/D
ACC
38902B/C
CONDITIONS
Guaranteed by Output Accuracy
V
IN
rising, 100mV hysteresis
V
IN
> V
OUT
+ 0.1V
For stability and proper operation
I
OUT
= 0mA
V
EN
= 0V
T
J
= +25°C
T
J
= +125°C
-1
0.594
0.6
0.07
50
0.06
3
26
36
63
600
600
700
700
12
70
70
60
40
0.001
50
0.8
0.4
-1
0.7
+0.001
0.01
+1
1.2
0.1
µF
µA
V
µA
dB
100
200
300
800
800
mA
µV
RMS
mV
MIN
1.7
1.5
0.6
2
4.7
365
0.01
700
+1
0.606
600
0.1
1.6
TYP
MAX
5.5
1.7
5.3
UNITS
V
V
V
µF
µA
nA
%
V
%
mV
%
mV
I
OUT
from 0.1mA to 500mA, V
IN
from
V
OUT
+ 0.3V to 5.5V, V
IN
> 1.7V
I
OUT
from 0.1mA to 500mA, V
IN
from
V
OUT
+ 0.3V to 5.5V, V
IN
> 1.7V
I
OUT
from 0.1mA to 500mA,
V
IN
= V
OUT
+ 300mV , V
OUT
= 2.5V
I
OUT
= 50mA to 500mA to 50mA,
t
RISE
= t
FALL
= 1µs
V
IN
from V
OUT
+ 0.3V to 5.5V,
V
IN
> 1.7V, I
OUT
= 200mA
V
IN
= 4V to 5V to 4V, I
OUT
= 500mA,
t
RISE
= t
FALL
= 5µs
V
IN
= 3.6V
I
OUT
= 500mA
V
IN
= 2.5V
V
IN
= 1.7V
Dropout Voltage (Note 2)
Current Limit
Output Noise
V
OUTS/FB
= 0V, V
IN
V
IN
= 1.7V
- V
OUT
= 500mV
V
IN
= 3.6V
I
OUT
= 100mA,
10Hz to 100kHz
C
BYP
= 47nF
f = 1kHz
f = 10kHz
f = 100kHz
f = 1MHz
Power Supply Rejection
Ratio
BYP Capacitor Range
BYP Soft-Start Current
EN Input Threshold
EN Input Leakage Current
PSRR
I
OUT
= 100mA
C
BYP
Regulator remains stable
From BYP to GND during startup
V
IN
from 1.7V
to 5.5V
V
EN
from 1.7V
to 5.5V
EN rising
EN falling
T
J
= +25°C
T
J
= +125°C
www.maximintegrated.com
Maxim Integrated
│
4
MAX38902A/MAX38902B/
MAX38902C/MAX38902D
Electrical Characteristics (continued)
12μV
RMS
Low Noise 500mA
LDO Linear Regulator
(V
IN
= 3.6V, T
J
= -40°C to +125°C, C
BYP
= 10nF, C
IN
= 4.7µF, C
OUT
= 4.7µF,
Typical Operating Circuits.
Typical values are at T
J
= +25°C,
unless otherwise specified. (Note 1)
PARAMETER
POK
Threshold
(MAX38902B Only)
POK
Voltage, Low
(MAX38902B Only)
POK
Leakage Current
(MAX38902B Only)
SELA/B Input Resistance
(MAX38902A Only)
SELA/B Input Capacitance
(MAX38902A Only)
Input Reverse Current
Threshold
Thermal Shutdown
Threshold
SYMBOL
CONDITIONS
V
OUT
when
POK
switches
I
POK
= 1mA
V
POK
= 5.5V
T
J
= +25°C
T
J
= +125°C
1
10
200
165
150
-0.1
V
OUT
rising
V
OUT
falling
MIN
88
TYP
91
88
10
+0.001
0.01
500
100
+0.1
MAX
94
UNITS
%
mV
µA
Ω
MΩ
pF
mA
°C
When shorted to GND or IN.
When Hi-Z
When Hi-Z
V
OUT
= 3.6V, when V
IN
falls to 0V
T
J
when output
turns on/off
T
J
rising
T
J
falling
Note 1:
Limits over the specified operating temperature and supply voltage range are guaranteed by design and characterization,
and production tested at T
J
= 25ºC only.
Note 2:
Dropout voltage is defined as (V
IN
- V
OUT
), when V
OUT
is 5% lower than the value of V
OUT
when V
IN
= V
OUT
+ 0.5V.
Note 3:
LED full-scale current maximum value is subjected to string number, LED number per string, and LX current limit. In SMBus
modes, if the total load is heavier than eight strings with ten WLEDs per string at 25mA LED current, upon step-up regulator
input VS removal, an OC fault may occur, resulting in SMBus status register OV_CURR and FAULT bits being set to 1 and
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Embedded System
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