SP7685ER-L Exar Corporation, SP7685ER-L Datasheet - Page 10

• Manufacturer Part Number: SP7685ER-L
• Description: LED Drivers 1.2A Bck/Bst Charge Pump LED Driver
• Manufacturer: Exar Corporation
• Series: -r

Specifications of SP7685ER-L

• Low Level Output Current: 0.4 A
• High Level Output Current: 2 A
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: DFN-10
• Minimum Operating Temperature: - 40 C
• Constant Current: -
• Constant Voltage: -
• Topology: PWM, Step-Down (Buck), Step-Up (Boost), Switched Capacitor (Charge Pump)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight, Flash/Torch
• Type - Secondary: High Brightness LED (HBLED), White LED
• Frequency: 2.4MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: -
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Watt pulsed power, more than enough for
this application. For other applications, the
P
size selected. The R
Date: 6/20/06 Rev T
Table 2: Resistor values and sizes
FLASH
power can be calculated and resistor
Part Reference
RSENSE
RSENSE
RSENSE
RSENSE
RSENSE
RSENSE
RSENSE
RSET
RSET
RSET
RSET
RSET
RSET
RSET
RSET
RSET
RSET
RSET
RSET
SENSE
resistor is recom-
100kΩ
120kΩ
150kΩ
110kΩ
0.22Ω
0.27Ω
0.33Ω
0.39Ω
0.47Ω
0.56Ω
0.68Ω
Value
33kΩ
39kΩ
43kΩ
47kΩ
56kΩ
62kΩ
68kΩ
82kΩ
SP7685, 1.2A Buck/BoostCharge Pump LED Driver
Tolerance
105%
205%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
10
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0402
0603
0603
0603
0603
0603
0604
0605
Size
EVALUATION BOARD CIRCUIT LAYOUT
mended to be size 0603 for most applica-
tions. The range of typical resistor values
and sizes are shown here in Table 2.
Panasonic or Vishay
Panasonic or Vishay
Panasonic or Vishay
Panasonic or Vishay
Panasonic or Vishay
Panasonic or Vishay
Panasonic or Vishay
Manufacturers
any
any
any
any
any
any
any
any
any
any
any
any
COMPONENT SELECTION
© 2006 Sipex Corporation