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SSL3250A
Datasheet
(Product Specification)
30-Jun-09, 26 pages, 138 kB
General description
The SSL3250A is a photo flash LED driver designed for battery operated mobile devices such as mobile phones and PDAs. The boost converter delivers high performance and drives a single or dual, high brightness LED at up to 500 mA with over 85 pct efficiency. The driver can be programmed to operate in Flash, Torch or Indicator / Video-on mode.
The small silicon size and the high internal switching frequency of 1.2 MHz minimize the SSL3250A footprint making it very suitable for mobile phones where space is limited, and only requiring four external components. Driving a high power flash LED within its safe operating limits was a concern when the SSL3250A was designed, so a time-out function can be programmed via the I2C interface, which will prevent overstressing the LED. Due to the specific requirements of a mobile phone, the flash current can be rapidly lowered during RF transmit by using optional external setting resistors.
Features
- High power single, or dual, LED output driving up to 500 mA flash current
- Separate indicator LED output of 2.5 mA to 20 mA
- Output voltage of up to 9.5 V
- Wide input voltage range of 2.7 V to 5.5 V
- High efficiency, over 85 pct at optimum output current
- Switching frequency of 1.2 MHz
- Flash, Torch, and Indicator mode supported
- Internally timed flash operation up to 820 ms
- I2C-bus, programmable up to 400 kHz
- Strobe signal to avoid I2C latency for flash
- Discrete enable signals for stand-alone operation
- Optional resistor configurable output currents
- Fast response to accommodate external TxMasking functionality
- Soft start in Torch and Flash modes to avoid battery overloading
- Integrated protection circuits for enhanced system reliability
- Internal time-out function
- OverTemperature Protection (OTP)
- UnderVoltage LockOut (UVLO)
- OverVoltage Protection (OVP)
- Output current protection
- Interrupt signaling to system controller
- Low device shut-down current, less than 1 uA
- SOT758-3, thermally enhanced 16 terminal HVQFN package
Products/packages
| Type number | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking | ECCN |
|---|---|---|---|---|---|---|---|
| SSL3250AHN/C1 | SSL3250AHN/C1,518 | 9352 875 57518 | Volume production | SOT758-3
(HVQFN16) | Reel Dry Pack, SMD, 13" | Standard Marking | |
| SSL3250AHN/C1 | SSL3250AHN/C1,528 | 9352 875 57528 | Volume production | SOT758-3
(HVQFN16) | Reel Dry Pack, SMD, 13",Turned | Standard Marking |
Quality/reliability/chemical content
| Type number | Orderable part number | Chemical content | RoHS | Leadfree Conversion date | RHF | IRF (FIT) | MTBF (hours) | MSL |
|---|---|---|---|---|---|---|---|---|
| SSL3250AHN/C1 | SSL3250AHN/C1,518 | SSL3250AHN_C1 |
| Always Pb-free | ||||
| SSL3250AHN/C1 | SSL3250AHN/C1,528 | SSL3250AHN_C1 |
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Orderable part number | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|---|
| SSL3250AHN/C1 | 9352 875 57518 | SSL3250AHN/C1,518 | NA | AVNET ELECTRONICS MARKETING | 100 | 11/19/2009 | Buy online | not available | ||
| SSL3250AHN/C1 | 9352 875 57528 | SSL3250AHN/C1,528 | NA | DIGI-KEY CORPORATION | 5,985 | 11/20/2009 | Buy online | not available | ||
| NA | MOUSER ELECTRONICS | 5,999 | 11/20/2009 | Buy online |
Applications
- White LED driver for battery powered portable devices
- Photo flash LED driver for mobile phones and digital cameras
Parametrics/similar products
| Type number | Package | Output voltage(V) | Switch frequency(kHz) | Output current(mA) | Operating temp.(Cel) | I²C-bus interface | I²C-bus(kHz) | Operating voltage(VDC) | # of Addresses |
|---|---|---|---|---|---|---|---|---|---|
| SSL3250AHN/C1 | SOT758-3
(HVQFN16) | 2.8~9.5 | 1200 | 500 | -40~85 | Fast Mode | 400 | 2.7~5.5 | 1 |
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