ssl3250a NXP Semiconductors, ssl3250a Datasheet
ssl3250a
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ssl3250a Summary of contents
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... 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 time-out function can be programmed via the I the specifi ...
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... White LED driver for battery powered portable devices I Photo flash LED driver for mobile phones and digital cameras 4. Ordering information Table 1. Type number SSL3250AHN/C1 HVQFN16 plastic thermal enhanced very thin quad flat 4.1 Ordering options Table 2. Type number SSL3250AHN/C1 SSL3250AHN/C1,518 5. Marking ...
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... CURRENT SINK CURRENT FEEDBACK UP CONVERTER R_IND R_FL R1 R2 PGND Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver 4.7 F Ceramic PGND SSL3250A VO 4.7 F Ceramic PGND One or two LEDs LED I sink PGND R_TR R3 GND 014aaa286 © NXP B.V. 2009. All rights reserved ...
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... Strobe signal to enable flash analog Exposed die pad; connect to GND Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver 12 PGND 11 INT SSL3250A 10 IF_SEL 9 LED 014aaa363 2 C mode / Enable 2 in Direct enable 2 C mode / Enable 1 in Direct enable 2 C mode © ...
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... LED voltage and the input voltage is now compensated by increasing the voltage over the current sink and therefore on the LED pin. Apart from the main LED(s), a separate indicator LED can be driven from the SSL3250A. This indicator LED is driven by a linear current sink circuit that operates independently from the switch mode converter for the main LED(s) ...
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... LED current EN1 EN2 ACT Shut-down Standby Fig 5. Functional description of the SSL3250A 8.2.2 Using the I Using the I register set (see Section 1. Set the correct current and timing values in the current control and timing registers. This arms the device for the required flash operation. ...
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... When not using the resistor R_FL, assume a value the Section 8.3. --------------- + Register R R_FL Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver 2 C mode and the pins should preferably mode the external R_TR resistor is 2 Equation mode is defined (1) 2. When not using © ...
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... LED 150 125 100 50 0 125 Torch current using direct control mode Torch mode LED current in Direct enable mode Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver 2 C, while mode 50 31.3 © NXP B.V. 2009. All rights reserved. ...
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... Flash current using I 2 Flash mode LED current mode Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver 2 C and Direct enable mode. Equation while mode Equation 3. and in (3) ...
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... Flash current using direct control mode Flash mode LED current in Direct enable mode Equation 5: 820 ms Register – 54.6 ms Section Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver 125 2 C interface mode. When 8.5. 50 Resistor Value (k ) 014aaa367 (5) © NXP B.V. 2009. All rights reserved. ...
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... Product data sheet current Register 2 ----------------- - R_IND illustrates the Indicator mode current setting equation for I Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver t < Flash and the dedicated indicator LED current BAT Equation 2 C, while 014aaa296 Equation 6 ...
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... 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 ...
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... LEDs are connected between ovp 2 C control mode, bit 0 in register 02h is Section 8.3.5. , see otp Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver Table 9), switching of the converter control Table 9), switching of the converter is © NXP B.V. 2009. All rights reserved. ...
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... SCL wire. Both lines must be connected to a positive supply via a pull-up resistor when SSL3250A_2 Product data sheet is HIGH and only one White LED is connected between VO and LED BAT Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver will stay almost at GND level. LED © NXP B.V. 2009. All rights reserved ...
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... June 2007 , which can be downloaded from the NXP web site (www.nxp.com). The following describes the protocols used by the SSL3250A for the read and write sequences. The read sequence may use a repeated start condition during the sequence to avoid that the bus is released during the communication ...
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... This 7-bit I create an 8-bit write address of 60h and a read address of 61h. The second byte sent to the SSL3250A is the subaddress of a specific register. 8.7.2 Data After the subduers have been sent the data byte(s) are sent. The definition of the data byte(s) is given in subduers is automatically incremented to the next subduers ...
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... OTPtrig TOtrig OVPtrig Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver Description Select time-out limit (default) Select timed operation * 820 ms (default) 765 ms ..... Enable flash LED not shorted to GND LED shorted to GND Temperature < maximum temperature Temperature > ...
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... LX and PGND nodes of the SSL3250A. Since large currents will flow from the input capacitor to the inductor and not into the VIN pin of the SSL3250A wise to locate the input capacitor near the inductor. The VIN pin should be star connected to the positive pad of the input capacitor ...
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... NXP Semiconductors If the SSL3250A is used in Direct enable mode and external resistors are used, place the external resistors near the SSL3250A, to minimize disturbance on the output current. Connect the other end of the resistors to a ‘clean’ ground, that is ground that is not carrying any large currents preferable to connect all resistor grounds to one trace and connect that trace to the GND pin of the SSL3250A ...
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... Shut-down mode; ACT = 0 ACT = 0 Inductor peak current limiter Independent of load Independent of load Independent of load IF_SEL = 1; Resistors used IF_SEL = 1; Resistors used IF_SEL = Resistors used Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver Typ Unit 63 K/W [1] Min Typ Max Unit 3 ...
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... IF_SEL = 1 (direct enable) default indicator current; IF_SEL = 1; EN1 = 1; EN2 = 0; R_IND = High ACT = 0; Shut-down mode NFET ACT = 0 to ACT = 1 response time the absolute value can be 2 set with I C Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver [1] Min Typ Max Unit [ 9 ...
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... Product data sheet Conditions sink digital digital IF_SEL pin IF_SEL pin sink temperature rising temperature falling = 25 C and V = 3.6 V. amb I between 2.7 V and 4.3 V each. F Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver [1] Min Typ Max Unit - - 0.5 V 1.2 - VIN 0 ...
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... 1 2.5 scale 3.1 2.85 1.6 3.1 2.85 0.2 2.9 2.65 1.4 2.65 2.9 REFERENCES JEDEC JEITA MO-220 Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver detail 1.6 0.5 0.5 1.5 1.5 0.1 1.4 0.3 EUROPEAN PROJECTION SOT758 ...
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... Personal Digital Assistants Pulse Width Modulation Radio Frequency Data sheet status Product data sheet information”: Type number SSL3250AHN changed to SSL3250AHN/C1 Section 4.1 “Ordering options” Section 5 “Marking” registers”: removed Table note [1]; replaced it with legend below title; Product data sheet Rev. 02 — ...
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... Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners C-bus — logo is a trademark of NXP B.V. http://www.nxp.com salesaddresses@nxp.com Rev. 02 — 21 April 2009 SSL3250A Photo flash dual LED driver © NXP B.V. 2009. All rights reserved ...
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... Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP B.V. 2009. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com SSL3250A All rights reserved. Date of release: 21 April 2009 Document identifier: SSL3250A_2 ...