sp7685 Exar Corporation, sp7685 Datasheet - Page 6

• Manufacturer Part Number: sp7685
• Description: 1.2a Buck/boost Charge Pump Led Driver
• Manufacturer: Exar Corporation

Date: 6/20/06 Rev T
1100
1000
300
250
200
150
100
V
450
400
350
300
250
200
150
100
50
900
800
700
600
500
400
300
200
100
50
0
IN
0
3.0
0
10 20 30
3.0
=3.6V, Typical Application Circuit, T
3.2
SP7685 Torch Output Current
3.2
40 50 60 70 80 90 100 110 120 130 140 150
SP7685 Output Current
SP7685 VFB vs RSET
3.4
3.4
Input Voltage (V)
Input Voltage (V)
RSET (KΩ)
3.6
3.6
-40C
25C
85C
1000mA,Vf=3.31V PWF1
700mA,Vf=3.24V PWF1
700mA,Vf=3.92V AOT
200mA,Torch Mode
Measured
Calculated
SP7685, 1.2A Buck/BoostCharge Pump LED Driver
3.8
3.8
A
4.0
4.0
= 25°C unless otherwise noted.
4.2
4.2
6
900
850
800
750
700
650
600
550
500
450
400
100
90
80
70
60
50
40
30
20
10
0
3.0
3.0
SP7685 700mA Flash output Current
3.2
3.2
APPLICATION INFORMATION
SP7685 Output Efficiency
1000mA,Vf=3.31V PWF1
700mA,Vf=3.18V PWF1
700mA,Vf=3.92V AOT
200mA,Torch
3.4
3.4
Input Voltage (V)
Input Voltage (V)
3.6
3.6
-40C
25C
85C
© 2006 Sipex Corporation
3.8
3.8
4.0
4.0
4.2
4.2