11 NC
10 FAULTB
9 DISC2
8 DISC1
7 VREG
DPS1035
24V/3.5A 1-CH POWER SWITCH W/ REVERSE-VOLTAGE PROTECTION
Pin Assignments
Description
The DPS1035 is part of a family of power switches optimized for the
(Top View)
TM
USB Type-C and other hot-swap applications. Through the analog
interface, exception status is reported and functions like voltage
limiting and output voltage ramp-up rate can be programmed.
IN 1 17 OUT
IN 2 16 OUT
This device is designed to operate between 4.5V and 24V. Its built-in
IN 3 15 OUT
fault-handling mechanism includes reverse voltage and current
18
SRC
EN 4 14 VLIM
blocking, input over-voltage protection, and thermal shutdown. In
addition, the ramp-up time of the output voltage can be adjusted to
NC 5 13 NC
minimize in-rush current and to ensure system stability. Before any
GND 6 12 DV/DT
exception condition is notified via the low-active FAULTB signal, de-
glitch of 7ms is applied to prevent false triggering.
The DPS1035 is housed in the low-profile and space-saving V-
QFN4040-17 package which is manufactured with environmentally
friendly material.
V-QFN4040-17
Features Applications
Wide Operating Voltage Range: 4.5V to 24V Notebook, Desktop & AIO PCs; Servers and Tablets
1-Channel Power Switch with Built-In Fault Detection and Docking Stations, Universal & Multimedia Hubs
Recovery Mechanisms like Input Under-Voltage Lockout, FPTVs, PC Monitors
Reverse-Voltage & Current Blocking, Thermal Shutdown and Set-Top-Boxes, Residential Gateways, Storage Devices
Input Over-Voltage Protection
R of Embedded Power MOSFET at 30m
DS(ON)
Adjustable DV/DT Control at Start-Up
Manual Discharge ON/OFF Control for IN and OUT Ports
Fault Reporting (FAULTB) with Blanking Time at 7ms Typical
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. Green Device (Note 3)
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See 11
NC
10
FAULTB
V V
SRC DISC2
18 9
DISC2
V
DISC1
8
DISC1
7
VREG
DPS1035
Typical Application Circuit
1 SRC 17
IN OUT
2 16
V IN OUT V
IN OUT
3 15
IN OUT
ON
V 4 14
EN
EN VLIM
DPS1035
OFF
C 5 13 C
IN OUT
NC NC
10F 10F
6 12
GND DV/DT
3.3V
C
VREG
R C R
3 DV/DT VLIM
C
0.1F FLT
10k 6.8nF 240k
0.1F
Pin Descriptions
Pin Number Pin Name Type Function
IN P Power Supply and Input Port.
1, 2, 3
EN I Enable. 0 = device OFF; 1 = device ON. This pin must not be left floating.
4
NC No Connection. All NC pins must be left floating.
5, 11, 13
GND GND Device Ground
6
VREG I/O Voltage Regulator. A 0.1F capacitor is recommended between this pin and ground.
7
DISC1 I IN Port Discharge Control. 1 = port voltage to be discharged; 0 = disabled.
8
DISC2 I OUT Port Discharge Control. 1 = port voltage to be discharged; 0 = disabled.
9
Fault Status Indicator. An external pull-up resistor is required. This active-low pin shall be tied to
FAULTB O
10
GND when not used.
DV/DT I/O Ramp-up Control. A capacitor between this pin and GND sets the ramp-up rate.
12
VLIM I/O Voltage Limit Setting. A resistor between this pin and GND sets the over-voltage limit of the IN port.
14
OUT O Output Port.
15, 16, 17
18 (Exposed Common Source. The exposed pad of the V-QFN4040-17 package must not be connected to any
SRC I/O
signal.
Pad)
2 of 11 August 2018
DPS1035
Diodes Incorporated
www.diodes.com
Document number: DS38925 Rev. 6 - 2
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