KTS1691 is a low-resistance, high-current load switch with soft-start, over-voltage protection, reverse-current blocking, over-current protection, short-circuit protection, over-temperature protection. It is optimized to protect systems with USB Type-C PD ports and barrel connectors that sink up to 140W at 20V and must withstand up to 29V on VBUS. KTS1691A/B has automatic reverse-current blocking feature which acts as an “ideal diode” and isolates VBUS when charging or powering the system via another port. KTS1691C/D supports bi-directional mode when turning on. Soft-start limits inrush current when turning on with large capacitors at the output. An ACOK flag indicates when power is good. KTS1691 is packaged in advanced, fully “green” compliant, 2.86 x 1.68mm, 15-bump Wafer-Level Chip-Scale Package (WLCSP).
| Part Number |
Marking1 |
Enable Polarity |
Switch Mode |
Operating Temperature |
Package |
| KTS1691AEDAE-TA2 |
UAYWZNAABB |
EN |
Unidirectional with RCP |
-40°C to +85°C |
WLCSP-15 |
| KTS1691BEDAE-TA |
UMYWZNAABB |
EN |
Unidirectional with RCP |
-40°C to +85°C |
WLCSP-15 |
| KTS1691CEDAE-TA |
UBYWZNAABB |
EN |
Bi-directional without RCP |
-40°C to +85°C |
WLCSP-15 |
| KTS1691DEDAE-TA |
UNYWZNAABB |
EN |
Bi-directional without RCP |
-40°C to +85°C |
WLCSP-15 |
1. UA or UM or UB or UN = Device Code, YW = Date Code, Z = Serial Number, N = Wafer ID, AABB = Axis Coordinates.
2. Future version – consult Kinetic Technologies authorized representative for availability.
- 3V to 24V Operating Voltage Range
- 29V Abs. Max. Rating at IN and OUT
- 7A Continuous Current Rating
- 18A Pulse Current Rating (duration Pd limited)
- 14.5mΩ typ. On-Resistance from IN to OUT
- Soft-Start (SS) Limits Inrush Current
- Over-Voltage Protection (OVP) at IN
- 24V Internally Fixed
- 4V to 24V External Resistor Programmable
- “Ideal Diode” Reverse Current Protection (RCP, KTS1691A/B only)
- 20mV Forward Voltage and 15µs Fast Recovery
- Bi-directional Mode when enabled (KTS1691C/D only)
- Over-Current Protection (OCP) at OUT
- Short-Circuit Protection (SCP) at OUT
- Over-Temperature Protection (OTP)
- Auto-Retry after All Faults
- EN or EN Enable Logic Input Versions
- ACOK Open-Drain Power Good Flag
- -40°C to 85°C Operating Temperature Range
- 15-bump WLCSP 2.86 x 1.68mm (0.5mm pitch)
- Desktop, Notebooks, Netbooks, Ultra-Books, Tablets
- Docking Stations, Monitors, Accessories
| Package |
Dimensions |
Package Code |
| WLCSP53-15 |
2.86mm x 1.68mm x 0.56mm |
DAE |
| Vin (min) |
Vin (max) |
ON Resistance (mΩ) |
Max Current (A) |
OVP Trip Point (V) |
OVP Turn Off Response Time (ns) |
IEC 61000-4-2 ESD (Air Discharge) |
IEC 61000-4-2 ESD (Contact Discharge) |
| 3V |
24V |
14.5 |
7 |
Fixed 24V
Adj 4~24V |
90 |
NA |
NA |