TPS1HC30-Q1
ZHCSP75A –JULY 2022 –REVISED DECEMBER 2022
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5 Pin Configuration and Functions
14
13
GND
EN
1
2
3
4
NC
VBB
VBB
DIAG_EN
12
11
10
9
Thermal
Pad
FAULT
LATCH
SNS
NC
5
6
7
VOUT
VOUT
NC
8
ILIM
图5-1. PWP Package, 14-Pin HTSSOP (Top View)
表5-1. Pin Functions
PIN
TYPE
DESCRIPTION
NO.
NAME
Ground of device. Connect to resistor-diode ground network to have
reverse battery protection.
1
GND
Power
2
3
4
5
6
EN
DIAG_EN
FAULT
LATCH
SNS
I
I
Input control for channel activation, internal pulldown
Enable-disable pin for diagnostics, internal pulldown
O
I
Open-drain global fault output. Referred to FAULT, FLT, or fault pin.
Thermal shutdown behavior, latch-off or auto-retry, internal pulldown
Output corresponding sense value based on sense ratio
O
Adjustable current limit. Short to ground or leave floating if external
current limit is not used.
7
ILIM
O
8, 11, 14
9, 10
NC
VOUT
VBB
Pad
N/A
Power
Power
—
No internal connection
Output of high-side switch, connected to load
Power supply
12, 13
Thermal Pad
Thermal Pad, internally shorted to ground
Recommended Connection for Unused Pins
The TPS1HC30-Q1 is designed to provide an enhanced set of diagnostic and protection features. However, if
the system design only allows for a limited number of I/O connections, some pins can be considered as optional.
表5-2. Connections For Optional Pins
PIN NAME
CONNECTION IF NOT USED
IMPACT IF NOT USED
SNS
Analog sense is not available.
Ground through 1-kΩresistor
With LATCH unused, the device auto-retries after a fault. If latched
Float or ground through RPROT behavior is desired, but the system describes limited I/O, it is possible to
LATCH
resistor
use one microcontroller output to control the latch function of several high
side channels.
If the ILIM pin is left floating, the device is set to the default internal current-
limit threshold. This impact is considered a fault state for the device.
ILIM
Float
Float or ground through RPROT With DIA_EN unused, the analog sense, open-load, and short-to-battery
DIA_EN
resistor
diagnostics are not available.
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