switches feature internal current limiting to prevent damage
to host devices due to faulty load conditions. These
current-limit switches feature a low, 10mΩ (typ) on-
resistance and operate from a +2.5V to +5.5V input voltage
range. The current limit is adjustable from 500mA to 6A,
making these devices ideal for charging a large load
capacitor and for high-current load-switching applications.
The MAX20313 and MAX20315 feature a continuous
current-limit mode during an overcurrent event. The
MAX20314 and MAX20316 feature a latchoff mode during
an overcurrent event. Additional safety features include
thermal shutdown protection to prevent overheating and
reverse current blocking to prevent current from being
driven back into the source.
The devices are available in a 12-bump (0.4mm pitch,
1.68mm x 1.48mm) wafer-level package (WLP) and operate
over the -40°C to +85°C extended temperature range.
Benefits and Features
● Reliable Protection
•
Adjustable Current Limit (500mA to 6A)
•
Accurate ±5% Overload Current Limit (2A to 6A)
• Current Monitoring
•
Low R
ON
10mΩ (typ)
•
Reverse Current Protection
•
Short-Circuit Protection
•
Thermal Shutdown Protection
●
Space Saving
•
12-Bump 0.4mm Pitch 1.68mm x 1.48mm WLP
Applications
●
●
●
●
●
●
RF Power Amplifiers in Cell Phones
USB Ports
Data Modem Cards
Portable Media Players
UTCA/ATCA Platforms
SDXC Card Power Supply Protection
Ordering Information
appears at end of data sheet.
19-100072; Rev 1; 3/18
MAX20313–MAX20316
500mA to 6A Adjustable
Current-Limit Switches
Absolute Maximum Ratings
(All voltages referenced to GND.)
IN, OUT, EN,
EN, FLAG,
SETI ................................-0.3V to +6V
Continuous Current Into Any Terminal (except IN, OUT)
...20mA
OUT Short Circuit to GND
................................Internally
Limited
Continuous Power Dissipation (T
A
= +70°C)
WLP (derate 13.73mW/°C above +70°C)
...............1098.4mW
Operating Temperature Range ........................... -40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................ -65°C to +150°C
Soldering Temperature (reflow)
.......................................+260°C
Package Thermal Characteristics
(Note 1)
WLP
Junction-to-Ambient Thermal Resistance (θ
JA
)
.....72.82°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.
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.
Electrical Characteristics
(V
IN
= 2.5V to 5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
IN
= 4.3V, C
IN
= 1µF, C
OUT
= 1µF,
T
A
= +25°C)
(Note 2)
PARAMETER
SUPPLY OPERATION
Operating Voltage
Undervoltage Lockout
Quiescent Current
V
IN
V
UVLO
I
Q
I
LATCH
I
SHDN
I
RSHDN
I
OUT
= 0A, switch on, (supply current comes
from high voltage between IN and OUT)
V
IN
= 4.3V, I
OUT
= 0A, after an
overcurrent fault (MAX20314,
MAX20316)
V
EN
= 0V, V
EN
= V
IN
, V
IN
= 5.5V,
V
OUT
= 0V
V
EN
= 0V, V
EN
= V
OUT
, V
IN
= 0V,
V
OUT
= 5.5V
V
IN
= 4.3V, I
OUT
= 1A, I
OUT
< I
LIM
,
T
A
= +25ºC
R
SETI
= 675Ω, V
IN
= 4.3V
Forward Current Limit (Note 3)
Current Limit Fold Back
R
SETI
Coefficient
R
SETI
Constant
Load Transient Step Reaction
Time
I
LIM
I
LIM_FB
P
C
t
SR
R
SETI
= 2063Ω, V
IN
= 4.3V
R
SETI
= 9019Ω, V
IN
= 4.3V
V
IN
= 4.3V, V
OUT
= 0V, I
LIM
= 1A
I
LIM
= 500mA to 6A
I
LIM
= 500mA to 6A
V
IN
= V
EN
= 4.3V, I
LOAD
= 80% I
LIM
steps to 120% I
LIM
to flowing current
within 10% I
LIM
5700
1900
425
2.5
1.45
250
525
5.5
V
V
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Latchoff Current
Shutdown Forward Current
Shutdown Reverse Current
INTERNAL FET
Switch-on Resistance (Note 3)
3.5
3.0
3.0
20
20
20
µA
µA
µA
R
ON
10
6000
2000
500
-10
3329
12
60
19
6300
2100
575
mΩ
mA
%
mA
µs
www.maximintegrated.com
Maxim Integrated
│
2
MAX20313–MAX20316
500mA to 6A Adjustable
Current-Limit Switches
Electrical Characteristics (continued)
(V
IN
= 2.5V to 5.5V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
IN
= 4.3V, C
IN
= 1µF, C
OUT
= 1µF,
T
A
= +25°C)
(Note 2)
PARAMETER
Accurate Reverse Current
Blocking Trigger Threshold
Accurate Reverse Current
Blocking Release Threshold
Accurate Reverse Blocking
Debounce Time
Fast Reverse Current Blocking
Threshold
Fast Reverse Blocking Response
Time
FLAG
Assertion Drop Voltage
Threshold
EN,
EN
INPUT
EN,
EN
Input Leakage
EN,
EN
Input Logic-High Voltage
EN,
EN
Input Logic-Low Voltage
FLAG
OUTPUT
FLAG
Output Logic-Low Voltage
FLAG
Output Leakage Current
TIMING CHARACTERISTICS
Turn-On Delay
t
ON
t
OFF
t
LIM
t
BLANK
Time from EN/EN signal to V
OUT
= 90%
of V
IN
, V
IN
= 4.3V (Figure 1)
Time from EN/EN signal to V
OUT
= 10%
of V
IN
, V
IN
= 4.3V, C
LOAD
= 1000pF,
R
LOAD
= 860Ω (Figure 1)
V
IN
= 4.3V, output high and then short
circuit applied, I
OUT
> 200% I
LIM
V
IN
= 4.3V (Figure 2)
12
2.5
4
5
ms
I
LEAK
V
IH
V
IL
I
SINK
= 1mA
V
IN
= V
FLAG
= 5.5V,
FLAG
deasserted
EN,
EN
= IN or GND
-0.9
1.4
0.4
0.4
0.9
0.9
µA
V
V
V
µA
SYMBOL
V
AREV_TH
V
AREV_EX
t
DB_ARIB
V
FREV_TH
t
FRIB
V
OUT
- V
IN
V
OUT
- V
IN
(V
OUT
- V
IN
) changes from 0V to
-0.02V in 100ns, the time needed to
block reverse current
V
OUT
- V
IN
(V
OUT
- V
IN
) changes from 0V to -0.3V in
100ns, the time needed to block reverse
current
Increase (V
IN
- V
OUT
) drop until
FLAG
asserts, in current limit mode, V
IN
= 4.3V
70
40
CONDITIONS
MIN
1
0
TYP
8
7
128
65
3
110
MAX
25
UNITS
mV
mV
µs
mV
µs
V
FA
120
185
mV
Turn-Off Time
50
µs
Current-Limit Reaction Time
Blanking Time
THERMAL PROTECTION
Thermal Shutdown
Thermal Shutdown Hysteresis
Temperature Increase
Self-Limitation
3
15
150
20
130
18
µs
ms
°C
°C
°C
Note 2:
All devices are 100% production tested at T
A
= +25°C. Specifications over the operating temperature range are guaranteed
by design.
Note 3:
Guaranteed by design and device characterization.
www.maximintegrated.com
Maxim Integrated
│
3
MAX20313–MAX20316
500mA to 6A Adjustable
Current-Limit Switches
EN
t
ON
90% V
IN
V
OUT
t
OFF
10% V
IN
Figure 1. Timing Diagram for Measuring Turn-On Time and Turn-Off Time
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