LP5521TM/NOPB National Semiconductor, LP5521TM/NOPB Datasheet - Page 6

• Manufacturer Part Number: LP5521TM/NOPB
• Description: IC LED DRIVER RGB 25-USMD
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: RGB LED Driverr

Specifications of LP5521TM/NOPB

• Constant Current: Yes
• Topology: PWM, Switched Capacitor (Charge Pump)
• Number Of Outputs: 3
• Internal Driver: Yes
• Type - Primary: Backlight, Light Management Unit (LMU)
• Type - Secondary: RGB
• Frequency: 1.25MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: 4.55V
• Mounting Type: Surface Mount
• Package / Case: 20-MicroSMD
• Operating Temperature: -30°C ~ 85°C
• Current - Output / Channel: 25.5mA
• Internal Switch(s): Yes
• Efficiency: 95%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LP5521TMTR

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R
f
I
t
V
Symbol
SW
GND
ON
OUT
OUT
Absolute Maximum Ratings
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
< T
1 μF, C
Charge Pump Electrical Characteristics
I
f
VDD
OSC
V(V
Voltage on Logic Pins
Continuous Power Dissipation
(Note 3)
Junction Temperature (T
Storage Temperature Range
Maximum Lead Temperature
(Soldering)
ESD Rating (Note 5)
Human Body Model:
Machine Model:
Symbol
A
< +85°C). Unless otherwise noted, specifications apply to the LP5521 Block Diagram with: 2.7V
DD
FLY1
, V
Standby supply
current
Normal mode
supply current
Powersave mode
supply current
Internal oscillator
frequency accuracy
OUT
= C
Parameter
, R, G, B)
FLY2
Charge pump output resistance
Switching frequency
Ground current
V
off to 1.5x mode
Charge pump output voltage
OUT
= 0.47 μF. (Note 9).
turn-on time from charge pump
J-MAX
EN = 0 (pin), CHIP_EN = 0 (bit), external 32 kHz clock running or not
running
EN = 1 (pin), CHIP_EN = 0 (bit), external 32 kHz clock not running
EN = 1 (pin), CHIP_EN = 0 (bit), external 32 kHz clock running
Charge pump and LED drivers disabled
Charge pump in 1x mode, no load, LED drivers disabled
Charge pump in 1.5x mode, no load, LED drivers disabled
Charge pump in 1x mode, no load, LED drivers enabled
External 32 kHz clock running
Internal oscillator running
Parameter
)
J
= 25°C. Limits in boldface type apply over the operating ambient temperature range (-30°C
-0.3V to V
Internally Limited
-65°C to +150°C
-0.3V to +6.0V
(Notes 2, 8)
with 6.0V max
(Notes 1, 2)
DD
(Note 4)
125°C
+0.3V
200V
2 kV
Gain = 1.5x
Gain = 1x
Gain = 1.5x
Gain = 1x
V
I
V
OUT
DD
DD
= 3.6V, CHIP_EN = H
= 3.6V, no load, Gain = 1.5x
Condition
= 60 mA
6
(Note 10)
Operating Ratings
Thermal Properties
Condition
V
Recommended Charge Pump
Load Current I
Junction Temperature (T
Ambient Temperature (T
(Note 6)
Junction-to-Ambient Thermal
Resistance (θ
(Note 7)
Junction-to-Ambient Thermal
Resistance (θ
(Note 7)
DD
JA
JA
OUT
), TMD20 Package
), YQA24A Package
A
J
) Range
) Range
Min
-7
(Notes 1, 2)
≤
V
Min
-4
-7
DD
1.25
4.55
Typ
100
3.5
1.2
0.5
1
≤
5.5V, C
-30°C to +125°C
0.25
0.70
0.25
Typ
0.2
1.0
1.4
1.5
1.2
10
-30°C to +85°C
50 - 90°C/W
37 - 90°C/W
Max
0 to 100 mA
2.7 to 5.5V
7
OUT
Max Units
2
4
7
= C
Units
MHz
IN
mA
mA
μs
%
Ω
Ω
V
mA
mA
mA
mA
mA
μA
μA
μA
μA
%
=