ZLED7015ZI1R ZMDI, ZLED7015ZI1R Datasheet - Page 15

• Manufacturer Part Number: ZLED7015ZI1R
• Description: LED Lighting Drivers LED driver
• Manufacturer: ZMDI

Specifications of ZLED7015ZI1R

• Rohs: yes
• Input Voltage: 6 V to 30 V
• Maximum Supply Current: 2 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: MSOP-10
• Minimum Operating Temperature: - 40 C

The output current controlled by the PWM voltage on FB can be calculated using equation (3):
Where
2.2.4
A microcontroller can control the LED output current by providing a PWM control signal to the FB pin as
described in section 2.2.3.
Depending on the application, the microcontroller can also be used to control the shutdown circuitry via the
EN pin (see section 2.1) providing a fast and smooth transition to shutdown.
2.2.5
In addition to functioning as a constant-current boost converter for driving an LED string, the ZLED7015 can
be configured as a constant-voltage boost converter for other
circuit for this application.
The output voltage controlled by the values of R
Where
Data Sheet
December 20, 2011
ZLED7015
1.0MHz Boost Converter with Internal 35V Switch
I
V
V
D
V
V
OUT
FB
PWM
OUT
FB
PWM
= Internal feedback reference voltage (see Table 1.3, parameter 1.3.7)
= Internal feedback reference voltage (Table 1.3, parameter 1.3.7)
= Output current through the LED(s) with a PWM control voltage
Microcontroller LED Control
Constant Voltage Application
= Output voltage to the load
= External PWM control voltage
= Duty cycle of the PWM control signal
V
I
OUT
OUT


© 2011 Zentrum Mikroelektronik Dresden AG — Rev. 1.00
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
V
V
FB
FB


(

 

R
R
3
3
R


S
R

V
S
PWM
)
R
R
S
4


D
R
PWM
5

V
3
FB
and R


 

S
can be calculated using equation (4):
applications.
Figure 2.4 demonstrates a typical
15 of 22
(3)
(4)