LP3944_14 Datasheet, PDF (5/17 Pages) Texas Instruments – RGB/White/Blue 8-LED Fun Light Driver

LP3944
www.ti.com
SNVS264 – MAY 2004
Electrical Characteristics
Unless otherwise noted, V_DD = 5.5V. Typical values and limits appearing in normal type apply for T_J = 25°C. Limits appearing
in boldface type apply over the entire junction temperature range for operation, T_J = −40°C to +125°C.⁽¹⁾
Symbol
Parameter
Conditions
Typical
Limit
Min Max
Units
POWER SUPPLY
V_DD
Supply Voltage
I_Q
Supply Current
No Load
Standby
5
2.3
5.5
V
350
550
µA
2.0
5
ΔI_Q
Additional Standby Current
V_DD = 5.5V, every LED pin at
4.3V
2
mA
V_POR
t_w
LED
Power-On Reset Voltage
Reset Pulse Width
1.8
1.96
V
10
ns
V_IL
LOW Level Input Voltage
V_IH
HIGH Level Input Voltage
I_OL
Low Level Output Current⁽²⁾
V_OL = 0.4V, V_DD = 2.3V
V_OL = 0.4V, V_DD = 3.0V
V_OL = 0.4V, V_DD = 5.0V
V_OL = 0.7V, V_DD = 2.3V
V_OL = 0.7V, V_DD = 3.0V
V_OL = 0.7V, V_DD = 5.0V
I_LEAK
C_I/O
Input Leakage Current
Input/Output Capacitance
V_DD = 3.6, V_IN = 0V or V_DD
See ⁽³⁾
ALL DIGITAL PINS (EXCEPT SCL AND SDA PINS)
−0.5
0.8
V
2.0
5.5
V
9
12
15
mA
15
20
25
−1
1
µA
2.6
5
pF
V_IL
LOW Level Input Voltage
V_IH
HIGH Level Input Voltage
I_LEAK
Input Leakage Current
C_IN
Input Capacitance
I²C INTERFACE (SCL AND SDA PINS)
V_IN = 0V⁽³⁾
−0.5
0.8
V
2.0
5.5
V
−1
1
µA
2.3
5
pF
V_IL
V_IH
V_OL
I_OL
F_CLK
t_HOLD
t_CLK-LP
t_CLK-HP
t_SU
t_DATA-HOLD
t_DATA-SU
t_SU
t_TRANS
LOW Level Input Voltage
HIGH Level Input Voltage
LOW Level Output Voltage
LOW Level Output Current
Clock Frequency
Hold Time Repeated START
Condition
CLK Low Period
CLK High Period
Set-Up Time Repeated START
Condition
Data Hold Time
Data Set-Up Time
Set-Up Time for STOP Condition
Maximum Pulse Width of Spikes
that Must Be Suppressed by the
Input Filter of Both DATA & CLK
Signals
V_OL = 0.4V
See ⁽³⁾
See ⁽³⁾
See ⁽³⁾
See ⁽³⁾
See ⁽³⁾
See ⁽³⁾
See ⁽³⁾
See ⁽³⁾
See ⁽³⁾
-0.5
0.3V_DD
V
0.7V_DD
5.5
V
0
0.2V_DD
V
6.5
3
mA
400
kHz
0.6
µs
1.3
µs
0.6
µs
0.6
µs
300
ns
100
ns
0.6
µs
50
ns
(1) Limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production with T_J = 25°C. All hot
and cold limits are guaranteed by correlating the electrical characteristics to process and temperature variations and applying statistical
process control.
(2) Each LED pin should not exceed 25 mA and the package should not exceed a total of 200 mA.
(3) Guaranteed by design.
Copyright © 2004, Texas Instruments Incorporated
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