LP3950 Datasheet, PDF (8/38 Pages) National Semiconductor (TI) – Color LED Driver with Audio Synchronizer

LP3950
SNVS331C – NOVEMBER 2004 – REVISED APRIL 2013
www.ti.com
Logic Interface Characteristics⁽¹⁾
Symbol
Parameter
Conditions
Min
Typ
Max
Units
LOGIC INPUTS SS, SI, SCK/SCL, PWM_LED, IF_SEL
V_IL
Input Low Level
V_IH
Input High Level
I_I
Logic Input Current
f_SCL
Clock Frequency
I²C Mode
SPI Mode
V_DDIO − 0.5
−1.0
0.5
V
V
1.0
µA
400
kHz
8
MHz
LOGIC OUTPUT SO
V_OL
Output Low Level
V_OH
Output High Level
I_L
Output Leakage Current
LOGIC I/O SDA
I_SO = 3.0 mA
I_SO = −3.0 mA
V_SO = 2.8V
0.3
0.5
V
V_DDIO − 0.5
V_DDIO − 0.3
V
1.0
µA
V_OL
Output Low Level
I_SDA = 3.0 mA
LOGIC INPUTS DME, AMODE (Internal pull down 1 MΩ)
0.3
0.5
V
V_IL
Input Low Level
V_IH
Input High Level
I_I
Logic Input Current
V_DDIO − 0.5
−1.0
0.5
V
V
6.0
µA
(1) (1.80V ≤ V_DDIO ≤ V_DD1,2V). Limits in standard typeface are for T_J = +25°C. Limits in boldface type apply over the operating ambient
temperature range (−40°C ≤ T_A ≤ +85°C).
Logic Interface Characteristics, Low I/O Voltage⁽¹⁾
Symbol
Parameter
Conditions
Min
Typ
Max
Units
LOGIC INPUTS SCL, PWM_LED, IF_SEL
V_IL
Input Low Level
V_IH
Input High Level
I_I
Logic Input Current
f_SCL
Clock Frequency
LOGIC I/O SDA
I²C Mode
V_DDIO − 0.35
−1.0
0.35
V
V
1.0
µA
200
kHz
V_OL
Output Low Level
I_SDA = 3.0 mA
LOGIC INPUTS DME, AMODE (Internal pull down 1 MΩ)
0.3
0.5
V
V_IL
Input Low Level
V_IH
Input High Level
I_I
Logic Input Current
V_DDIO − 0.35
−1.0
0.35
V
V
6.0
µA
(1) (1.65V ≤ V_DDIO < 1.80V) . I²C compatible interface only.
Logic Input NRST Characteristics⁽¹⁾
Symbol
Parameter
Conditions
Min
V_IL
V_IH
I_I
t_NRST
Input Low Level
Input High Level
Logic Input Current
Reset Pulse Width
Note: Guaranteed by
design
1.3
−1.0
10
Typ
Max
Units
0.5
V
V
1.0
µA
µs
(1) (1.65V ≤ V_DDIO ≤ V_DD1,2V).
8
Submit Documentation Feedback
Product Folder Links: LP3950
Copyright © 2004–2013, Texas Instruments Incorporated