LD5805
06/15/2015
Ordering Information
Part number
Package
TSSOP-EP-16
SOP-16
Top Mark
LD5805GHE1
LD5805GS1
LD5805GN1
Shipping
LD5805GHE1
2500 /tape & reel
2500 /tape & reel
1800 /Tube/ Carton
LD5805GS1
LD5805GN1
DIP-16
The LD5805 is ROHS compliant/Green packaged.
Pin Descriptions
SOP/DIP
TSSOP
NAME
FUNCTION
1
2
3
4
5
6
7
5
6
LED4
ISET
OVP
RT
LED String 4 Current Input.
LED current resistor setting
7
Output voltage and short detection pin.
Operating frequency resistor setting
8
9
EN
Chip Enable pin, when pull-low is in shutdown mode.
Power MOSFET Current Sense
10
11
CS
LDR
Gate drive signal for external MOSFET.
Internal linear regulator output pin. Bypass with VCC to GND with a
ceramic capacitor of 1F or greater. VCC is for chip internal use only.
Input Power of the chip. Bypass with at least 1F ceramic capacitor
close to VIN pin.
8
9
12
13
14
VCC
VIN
Output dimming mode selection, This pin is connected with
capacitance for Analog dimming output.
Soft star Compensation circuit for Boost topology.
Input PWM Dimming Signal for brightness control
LED String 1 Current Input.
10
LPF
11
12
13
14
15
16
15
16
1
COMP
PWM
LED1
LED2
GND
2
LED String 2 Current Input.
3
Ground
4
LED3
LED String 3 Current.
5
Leadtrend Technology Corporation www.leadtrend.com.tw
LD5805-DS-01 June 2015