LDS8865002-T2-250 IXYS, LDS8865002-T2-250 Datasheet - Page 3

• Manufacturer Part Number: LDS8865002-T2-250
• Description: IC LED DVR WHT/CLR BCKLGT 16WQFN
• Manufacturer: IXYS
• Series: PowerLite™r
• Type: Backlight, White LED, Color LEDr

Specifications of LDS8865002-T2-250

• Topology: Linear (LDO), PWM, Switched Capacitor (Charge Pump)
• Number Of Outputs: 6
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 100kHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-WQFN Exposed Pad, 16-DQFN
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 32mA
• Internal Switch(s): Yes
• Efficiency: 94%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Other names: LDS8865-002-T2; LDS8865-002-T2-2; LDS8865-002-T2-2; LDS8865002-T2-25; LDS8865002-T2-25-2; LDS8865002-T2-25-2; LDS8865002-T2-250-2

LDS8865
PIN DESCRIPTION
PIN FUNCTION
V
ceramic bypass capacitor is required between the V
pin and ground near the device. The operating input
voltage range is from 2.5V to 5.5V. Whenever the
input supply falls below the under-voltage threshold
(2.2 V), all the LED channels are disabled and the
device enters shutdown mode.
PWM1, PWM2 are the enable and PWM LED
brightness control logic inputs.. Guaranteed levels of
logic high and logic low are set at 1.3V and 0.4V
respectively. When any of PWM pins is taken high,
the device becomes enabled with maximum LED
current at associated bank. To place the device into
zero current mode, both PWM pins must be held low
for more than 30 ms.
V
the LED anodes. A small 1
© 2009 IXYS Corp.
Characteristics subject to change without notice
15, 16
IN
OUT
Pin #
TAB
10
11
12
13
14
is the supply pin for the charge pump. A small 1
1
2
3
4
5
6
7
8
9
is the charge pump output that is connected to
LEDC2
LEDC1
LEDB2
LEDB1
LEDA2
LEDA1
PWM2
PWM1
Name
GND
V
TAB
C1+
C2+
C1-
C2-
V
OUT
IN
LEDC2 cathode terminal
LEDC1 cathode terminal
LEDB2 cathode terminal
LEDB1 cathode terminal
LEDA2 cathode terminal
LEDA1 cathode terminal
Charge pump output connected to the LED anodes
Charge pump input, connect to battery or supply
Bucket capacitor 1 Positive terminal
Bucket capacitor 1 Negative terminal
Bucket capacitor 2 Positive terminal
Bucket capacitor 2 Negative terminal
LEDC bank PWM brightness control
LEDA and LEDB banks PWM brightness control
Ground Reference
Bottom Thermal Pad; connect to GND on the PCB
μ
F ceramic bypass
Function
μ
IN
F
3
capacitor is required between the V
ground near the device.
GND is the ground reference for the charge pump.
The pin must be connected to the ground plane on
the PCB.
C1+, C1- are connected to each side of the ceramic
bucket capacitor C1
C2+, C2- are connected to each side of the ceramic
bucket capacitor C2
LEDA1 – LEDC2 provide the internal regulated
current source for each of the LED cathodes. These
pins
whenever the device is in shutdown mode.
TAB is the exposed pad underneath the package.
For best thermal performance, the tab should be
soldered to the PCB and connected to the ground
plane
enter
high-impedance
Top view: TQFN 16-lead 3 X 3 mm
Doc. No. 8865DS, Rev. N2.1
zero
current
OUT
pin and
state