LM27964SQ-C/NOPB National Semiconductor, LM27964SQ-C/NOPB Datasheet - Page 2

• Manufacturer Part Number: LM27964SQ-C/NOPB
• Description: IC LED DRIVR WHITE BCKLGT 24-LLP
• Manufacturer: National Semiconductor
• Type: Backlight, White LED (I²C Interface)r
• Series: -r

Specifications of LM27964SQ-C/NOPB

• Constant Current: Yes
• Topology: PWM, Switched Capacitor (Charge Pump)
• Number Of Outputs: 7
• Internal Driver: Yes
• Type - Primary: Backlight, General Purpose
• Type - Secondary: White LED
• Frequency: 500kHz ~ 900kHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: 2 V ~ 4 V
• Mounting Type: Surface Mount
• Package / Case: 24-LLP
• Operating Temperature: -30°C ~ 85°C
• Current - Output / Channel: 30mA
• Internal Switch(s): Yes
• Efficiency: 87%
• Led Driver Application: Camera Phone LED Flash, LED Backlight
• No. Of Outputs: 7
• Output Current: 180mA
• Input Voltage: 2.7V To 5.5V
• Operating Temperature Range: -30°C To +85°C
• Rohs Compliant: Yes
• Constant Voltage: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM27964SQ-C; LM27964SQ-C; LM27964SQ-C-TR

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Order Information
LM27964SQ-I
LM27964SQX-I
LM27964SQ-C
LM27964SQX-C
9, 10, 18, DAP
Connection Diagram
Pin Descriptions
13, 14, 15, 16
Ordering Information
19, 22 (C1)
20, 21 (C2)
Pin #s
8, 11
4, 5
24
23
17
12
6
3
1
2
7
D4A, D3A, D2A, D1A LED Drivers - GroupA
Current Source
PWM Frequency
10kHz.
23kHz.
Pin Names
D1B, D2B
C1, C2
DKEY
SDIO
P
I
I
I
GND
SCL
VIO
SETA
SETB
SETK
NC
V
OUT
IN
Input voltage. Input range: 2.7V to 5.5V.
Charge Pump Output Voltage
Flying Capacitor Connections
LED Drivers - GroupB
LED Driver - KEYPAD
Placing a resistor (R
Group A LEDs. LED Current = 200 × (1.25V ÷ R
Placing a resistor (R
Group B LEDs. LED Current = 200 × (1.25V ÷ R
Placing a resistor (R
KEYPAD LEDs. Keypad LED Current = 800 × (1.25V ÷ R
Serial Clock Pin
Serial Data Input/Output Pin
Serial Bus Voltage Level Pin
Ground
No Connect
Package
SQA24 LLP
SQA24 LLP
NS Package Number SQA24A
24 Pin Quad LLP Package
SETA
SETB
SETK
2
) between this pin and GND sets the full-scale LED current for
) between this pin and GND sets the full-scale LED current for
) between this pin and GND sets the total LED current for the
Supplied As
1000 Units, Tape & Reel
4500 Units, Tape & Reel
1000 Units, Tape & Reel
4500 Units, Tape & Reel
Pin Descriptions
SETA
SETB
)
)
SETK
)
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