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Maxic Technology

MT7815B Datasheet Preview

MT7815B Datasheet

PWM/Analog dimmable Non-isolated Constant Current LED Driver

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MT7815B
PWM/Analog dimmable Non-isolated
Constant Current LED Driver
DESCRIPTION
MT7815B is a high precision LED constant
current controller operating at critical conduction
mode (CRM) with zero current switched-on and
peak current switched-off. It’s mainly targeted for
non-isolated buck LED power systems and
PWM/Analog dimmable application.
Critical conduction mode ensures that the
MT7815B turns on the internal switch when the
inductor current reaches zero, reducing the
switch-on switching losses, and achieving more
than 93% efficiency.
With critical conduction mode, and the input
compensation, MT7815B outputs high accuracy
LED current, and further achieves excellent line
regulation and load regulation.
MT7815B has wide working voltage range, which
is suitable for full-range AC input or 12V ~ 500V
DC input voltage. MT7815B provides various
protection features to improve the system
reliability, including over current protection (OCP),
short circuit protection (SCP), adjustable over
voltage protection (OVP) and over temperature
regulation (OTR), etc.
FEATURES
Critical Conduction Mode, insensitive to the
inductance
PWM/ Analog dimming function
High efficiency (up to 93%)
Highly accurate constant LED current
Cycle-by-cycle current limiting
LED short circuit protection
Adjustable LED over voltage protection
Leading edge blanking technique
Under-voltage lockout (UVLO) protection
Over temperature regulation (OTR)
Available in SOT23-6 package
APPLICATIONS
LED tube, signal lamp, landscape lamp
LED stage light, etc
Intelligent LED lighting application
Typical Application Circuit
Vin_ac
MT7815B
DIM VCC
GND
OVP
SW
CS
LEDs
Email: sales@maxictech.com
Tel: 86-10-62662828
www.maxictech.com
Copyright © 2016 Maxic Technology Corporation
Rev. 1.15
Page 1




Maxic Technology

MT7815B Datasheet Preview

MT7815B Datasheet

PWM/Analog dimmable Non-isolated Constant Current LED Driver

No Preview Available !

ABSOLUTE MAXIMUM RATINGS
VCC maximum sink current
SW (internal switch input pin input voltage)
OVP (over voltage protection pin input voltage)
DIM (PWM/Analog dimming pin input voltage)
CS (current sense pin input voltage)
PDMAX (maximum power dissipation)
Storage Temperature range
Junction Temperature (Tj)
MT7815B
PWM/Analog dimmable Non-isolated
Constant Current LED Driver
5mA
-0.3V~ 40V
-0.3V ~ 6V
-0.3V ~ 6V
-0.3V ~ 6V
0.5W
-55°C ~ 150°C
150°C
RECOMMENDED OPERATING CONDITIONS
Operating Ambient Temperature Range
Output Current
-40°C ~ 125°C
<700mA
Thermal resistance
Junction to ambient (RθJA)
170°C/W
PIN CONFIGURATIONS
DIM 1
6 OVP
GND 2
5 VCC
CS 3
44 SW
(SOT23-6)
Chip Mark
15BxxYW
Week code
Year code
Manufacture code
PIN DESCRIPTION
Name
DIM
GND
CS
SW
VCC
OVP
Pin No.
1
2
3
4
5
6
Description
Chip enable/ PWM dimming /analog dimming
Internal has a 300K pull_up resistor, this pin can be floating
Ground
Current sense input, connect a sense resistor to ground
Internal switch input
Power supply pin, internal clamped at 15V
Adjustable over voltage protection pin
Email: sales@maxictech.com
Tel: 86-10-62662828
www.maxictech.com
Copyright © 2016 Maxic Technology Corporation
Rev. 1.15
Page 2


Part Number MT7815B
Description PWM/Analog dimmable Non-isolated Constant Current LED Driver
Maker Maxic Technology
Total Page 2 Pages
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