ncp1840 ON Semiconductor, ncp1840 Datasheet - Page 3

• Manufacturer Part Number: ncp1840
• Description: High Current, 8-output Led Driver
• Manufacturer: ON Semiconductor

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. This device series incorporates ESD protection and is tested by the following methods:
2. For information, please refer to our Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
3. These levels apply to pins SCL and SDA.
PIN FUNCTION DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
THERMAL CHARACTERISTICS
Thermal Characteristics, 20L NQFP, 4 x 4 mm
Input Voltage Range (Note 3)
Output Voltage Range (Note 3)
Maximum Junction Temperature
Storage Temperature Range
ESD Capability, Human Body Model (Note 1)
ESD Capability, Machine Model (Note 1)
Lead Temperature Soldering
2 to 5; 11 to 14
16, 17, 19, 20
Pin No.
15, (21)
ESD Human Body Model tested per AEC−Q100−002 (EIA/JESD22−A114)
ESD Machine Model tested per AEC−Q100−003 (EIA/JESD22−A115)
Latchup Current Maximum Rating: v150 mA per JEDEC standard: JESD78
10
18
1
6
7
8
9
Thermal Resistance, Junction−to−Air
Reflow (SMD Styles Only), Pb−Free Versions (Note 2)
C2M, C1M, C2P,
Pin Name
ULED1 to
and C1P
R_IDAC
ULED8
DV
GND
GND
SDA
V
CP0
SCL
BAT
CC
Rating
Rating
Charge pump output used as power supply to the LEDs. Should have a 2.2 mF ceramic
capacitor (X5R or X7R) connected to ground.
Sink current output. Current value, PWM, blinking and gradation programmable through the
serial interface
Ground connection. Should be connected along with the “ground pad” to the board ground
plane.
Supply input for the digital circuitry. Should have a 1 mF ceramic capacitor (X5R or X7R)
connected to ground.
Serial interface clock input. Logic levels referenced to DV
Serial interface data input/output. Logic levels referenced to DV
An external 10.25 kW resistor connected to ground defines the reference current used to set the
current DACs connected to the ULED outputs.
Ground connection. Should be connected along with the “ground pad” to the board ground
plane.
Charge pump flying capacitor connections. A 1 mF ceramic capacitor (X5R or X7R) should be
connected from C1P to C1M. A 1 mF ceramic capacitor (X5R or X7R) should be connected from
C2P to C2M.
Supply for the charge pump and analog circuitry. Should have a 2.2 mF low ESR ceramic
capacitor connected to ground.
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3
Description
ESD
Symbol
ESD
T
T
T
J(max)
V
V
STG
SLD
out
Symbol
in
HBM
MM
R
qJA
CC
−0.3 to DV
−0.3 to DV
CC
−40 to 150
Value
150
175
260
Value
2
66.7
CC
CC
+ 0.3
+ 0.3
°C/W
Unit
Unit
°C
°C
kV
°C
V
V
V