ssl3250a NXP Semiconductors, ssl3250a Datasheet - Page 12

• Manufacturer Part Number: ssl3250a
• Description: Photo ?ash Dual Led Driver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
SSL3250A_2
Product data sheet
8.4 Protection circuits
There are several protection circuits integrated in the device. These protection circuits
protect the device and the application against defects. The SSL3250A has four protection
circuits that will inhibit switching of the converter, programming the status register 03h and
pulling LOW the interrupt line. The interrupt line, which can be connected to external logic,
signaling an error condition. The external logic can read the status register to determine
which fault caused the interrupt and decide on the proper action to take. When not using
the I
to signal a fault condition.
Fig 11. Indicator LED currents in I
Fig 12. Indicator LED currents in Direct enable mode
2
I
I
I_IND
I_IND
C mode, the status register cannot be read out but the interrupt line still is functional
(mA)
(mA)
10.0
17.5
12.5
22.5
20.0
17.5
12.5
7.5
2.5
7.5
3.0
2.5
0
0
0
1
Rev. 02 — 21 April 2009
165
Indicator current using direct control mode
2
Indicator current using I
C mode
3
50
2
C mode
5
Photo flash dual LED driver
SSL3250A
25
7
© NXP B.V. 2009. All rights reserved.
value (k )
014aaa368
014aaa369
Register
Register
value
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