MAX14691 Datasheet, PDF (9/19 Pages) Maxim Integrated Products – High-Accuracy, Adjustable Power Limiter

MAX14691–MAX14693
High-Accuracy, Adjustable Power Limiter
Pin Configurations
TOP VIEW
15 14 13 12 11
RIPEN ¹⁶
HVEN ¹⁷
CLTS2 ¹⁸
CLTS1 19
EN ²⁰
+
MAX14691–
MAX14693
GND /EP
12345
10 UVLO
9 OVLO
8 _FLAG
7 SETI
6 GP
TQFN
(5mm x 5mm)
Pin Description
PIN
NAME
1–5
IN
6
GP
7
SETI
8
FLAG
9
OVLO
10
11–15
16
17
18
19
20
—
UVLO
OUT
RIPEN
HVEN
CLTS2
CLTS1
EN
GND/EP
FUNCTION
Overvoltage Protection Input. Bypass IN to ground with a 1µF ceramic capacitor for ±15kV Human
Body Model ESD protection on IN.
Gate Driver Output for External pFET.
Overload Current-Limit Adjust. Connect a resistor from SETI to GND to program the overcurrent
limit. SETI must be connected to a resistor. If SETI is connected to GND during startup, then the
switch does not turn on. Do not connect more than 30pF to SETI.
Open Drain Fault Indicator Output. FLAG asserts low when the V_IN - V_OUT voltage exceeds
V_FA, reverse current is detected, thermal shutdown mode is active, OVLO or UVLO threshold is
reached, or SETI is connected to GND.
Externally-Programmable Overvoltage-Lockout Threshold. Connect OVLO to GND to use the
default internal OVLO threshold. Connect OVLO to an external resistor-divider to define a
threshold externally and override the preset internal OVLO threshold.
Externally Programmable Undervoltage-Lockout Threshold. Connect UVLO to GND to use the
default internal UVLO threshold. Connect UVLO to an external resistor-divider to define a threshold
externally and override the preset internal UVLO threshold.
Switch Output. Bypass OUT to GND with a 4.7µF ceramic capacitor placed as close as possible to
the device.
Reverse-Current Protection Enable. Connect RIPEN to GND to disable the reverse-current flow
protection. Connect RIPEN to logic-high to activate the reverse-current flow protection.
58V Capable Active-Low Enable Input. See Table 1.
Current-Limit Type Select 2. See Table 2.
Current-Limit Type Select 1. See Table 2.
Active-High Enable Input. See Table 1.
Ground/Exposed Pad. Connect to a large copper ground plane to maximize thermal performance.
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