Techcode®
DATASHEET
1.5MHz 2A synchronous Step-Down Regulator Dropout
General Description
Features
The TD6817D is a current mode monolithic buck switching
regulator. Operating with an input range of 2.5V‐6V, the
TD6817D delivers 2A of continuous output current with
integrated P‐Channel and N‐Channel MOSFETs. The internal
synchronous power switches provide high efficiency. At light
loads, the regulator operate in low frequency to maintain
high efficiency and low output ripples. Current mode control
provides tight load transient response and cycle‐by‐cycle
current limit.
The TD6817D guarantees robustness with hiccup output
short‐circuit protection, FB short‐circuit protection, start‐up
current run‐away protection, input under voltage lockout
protection, hot‐plug in protection, and thermal protection.
The TD6817D requires a minimum number of readily
available standard external components. It is available in
SOT23‐5L packages.
TD6817D
2.5V to 6V operating input range
Up to 2A output current
Up to 94% peak efficiency
High efficiency (>85%) at light load
Internal Soft‐Start
1.5MHz switching frequency
Input under voltage lockout
Short circuit protection
Thermal protection
Hot‐plug in protection
Available in SOT23‐5 PbFree Package
Application
Set Top Boxes
Storage Equipment
GPU/DDR Power Supply
Telecom/Networking Systems
5V or 3.3V Point of Load Conversion
Pin Configurations
Package Types
(Top view)
SOT23‐5
August, 22, 2017. Techcode Semiconductor Limited www.techcodesemi.com
1
Techcode®
DATASHEET
1.5MHz 2A synchronous Step-Down Regulator Dropout
TD6817D
Pin Description
Pin Number
Pin Name
Description
1
EN
Chip Enable pin. Active high.
2
GND
Ground Pin.
3
SW
Switch Node Connection to Inductor. This pin connects to the drains of the internal main and
synchronous power MOSFET switches.
4
VCC
Input voltage pin. VCC supplies power to the IC. Connect a 2.5V to 6V supply to VCC and bypass
VCC to GND with a suitably large capacitor to eliminate noise on the input to the IC.
5
FB
Feedback Pin. Receives the feedback voltage from an external resistive divider across the
output.
Ordering Information
TD6817D
□
□
Circuit Type Packing:
Blank:Tube
Package
R: Tape and Reel
T:SOT23-5
August, 22, 2017. Techcode Semiconductor Limited www.techcodesemi.com
2
Techcode®
DATASHEET
1.5MHz 2A synchronous Step-Down Regulator Dropout
TD6817D
Function Block
Figure1 Function Block Diagram of TD6817D
Typical Application Circuit
Figure2 2.5V≦Vin≦6V Vout=1.8V
Figure3 4.2V≦Vin≦6V Vout=3.3V
August, 22, 2017. Techcode Semiconductor Limited www.techcodesemi.com
3
Techcode®
DATASHEET
1.5MHz 2A synchronous Step-Down Regulator Dropout
TD6817D
Absolute Maximum Ratings (at TA=25℃)
Symbol
Parameter
Rating
Unit
All Pins
‐0.3 to 7.2
V
ESD
ESD Susceptibility (Human Body Model)
2K
V
TOP
Operating Junction Temperature
‐40 to 125
ºC
TJ
Junction Temperature
TSTG
Storage Temperature
TSDR
150
ºC
ºC
‐65 ~ 150
Maximum Lead Soldering Temperature (10 Seconds)
ºC
260
Electrical Characteristics
Unless otherwise specified, these specifications apply over VIN=5V, VEN=5V, TA=25°C
Characteristics
Symbol
Conditions
Min
Typ
Max
Units
Input Voltage Range
VIN
2.5
‐
6
V
Input UVLO
UVLO
VIN rising
2.25
2.4
2.55
V
VIN Under Voltage Lockout
Hysteresis
UVLO_HYST
VIN falling
‐
180
‐
mV
Input OVLO
OVLO
VIN rising
6.5
7
7.5
V
VIN Over Voltage Protection OVLO_HYST
Threshold
VIN falling
‐
400
‐
mV
Quiescent Current
IQ
VEN=2V,VFB=VREF*105%
‐
40
60
μA
Shutdown Current
ISD
VEN=0V
‐
0.1
1
μA
FB Pin Voltage
VFB
2.5V
很抱歉,暂时无法提供与“TD6817D”相匹配的价格&库存,您可以联系我们找货
免费人工找货- 国内价格
- 5+0.85004
- 20+0.77504
- 100+0.70004
- 500+0.62503
- 1000+0.59003
- 2000+0.56503