LP3942YQ NSC [National Semiconductor], LP3942YQ Datasheet - Page 4

• Manufacturer Part Number: LP3942YQ
• Description: The Dual RGB LED Controller with 1.5x/2x Charge Pump and SPI Interface
• Manufacturer: NSC [National Semiconductor]

www.national.com
CHARGE PUMP 1.5x MODE
V
R
G
CHARGE PUMP 2x MODE
V
R
G
I
I
I
I
f
t
T
Q
Q
SD
SD
sw
start
Symbol
Symbol
POUT
POUT
SHD
OUT
OUT
Absolute Maximum Ratings
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
Limits in standard typeface are for T
(−30˚C ≤ T
V
CP
CP
(V
(V
(V
(V
V
Voltage on R1, G1, B1, R2, G2,
Voltage on All Other Pins
Continuous Power Dissipation
Junction Temperature (T
Storage Temperature Range
Maximum Lead Temperature
VDD
IN
DD
IN
B2 Pins
(Note 3)
(Soldering)
IN
DD
)
)
Pin: Voltage to GND
)
= 2.78V, V
)
Output Voltage
Accuracy (Note 10)
Output Resistance
Charge Pump Gain
Output Voltage (Note 10)
Output Resistance
Charge Pump Gain
Operating Quiescent Current
Operating Quiescent Current
Standby Quiescent Current
Standby Quiescent Current
Switching Frequency
Startup Time
Shutdown Threshold.
Hysteresis
A
≤ +105˚C). Unless otherwise noted, specifications apply to the LP3942 Typical Application Circuit (pg. 1) with:
IN
3.6V, C
Parameter
Parameter
J-MAX
IN
= 2.2 µF, C
)
+ 0.3V, with 6.0V max
J
= +25˚C. Limits in boldface type apply over the operating junction temperature range
−0.3V to V
1
Internally Limited
−65˚C to +150˚C
= 1.0 µF, C
−0.3V to +6.0V
(Notes 2, 8)
−0.3V to P
with 6.0V max
3.4V
I
3.0V
3.4V
I
V
3.20V
I
3.0V
I
V
I
NSTBY = 0
NRST pin current excluded
NSTBY = 0,
SPI interface inputs at 0V or 1.8V
NRST pin current excluded
R
After writing ‘1’ to NSTBY AND
CP_ON. NRST must be ‘1’.
OUT
OUT
OUT
OUT
(OUT)
(Notes 1,
DD
DD
BIAS
IN
(Note 4)
= 3.0V
= 3.0V
≤ 120 mA
≤ 120 mA
≤ 120 mA
≤ 80 mA
<
<
<
<
+0.3V,
150˚C
= 0A (Note 11)
= 27 kΩ
<
V
V
V
V
2
OUT
V
IN
IN
IN
IN
= 1.0 µF, C
IN
<
<
<
<
Condition
<
Condition
5.0V,
3.4V
5.0V,
3.2V,
±
5.0V,
4
1%
Operating Ratings
Thermal Properties
OUT
ESD Rating (Note 5)
Input Voltage Range
V
Recommended Load Current
Junction Temperature (T
Ambient Temperature (T
Junction-to-Ambient Thermal Resistance
DD
Human Body Model:
Machine Model:
(Note 6)
(θ
= 3.0 µF, R
JA
Voltage Range
), LLP24 Package (Notes 6, 7)
BIAS
4.75
4.75
Min
Min
500
= 27k. (Note 9).
A
J
) Range
) Range
(1.5xV
– (I
R
(Notes 1, 2)
Typ
Typ
200
625
160
4.5
1.5
5.0
5.0
1.0
0.5
OUT
±
±
±
20
OUT
5
5
2
4
1
3
3
3
IN
)
x
)
−30˚C to +105˚C
0 mA to 120 mA
−30˚C to +85˚C
2.69V to 2.87V
Max
5.25
5.25
Max
300
750
3.0
±
±
±
10
7
2
2
3.0V to 5.0V
5
5
5
A
34˚C/W
2.0 kV
200V
Units
Units
kHz
mA
ms
µA
µA
µA
˚C
˚C
%
%
%
Ω
Ω
V
V
V