www.fairchildsemi.com FAN5608 Serial/Parallel LED Driver with Current-Regulated, Step-Up DC/DC Converter Features Description • Two Independent Channels Drive up to Six LEDs per Channel • Adaptive Output Voltage Drive to Maximize Efficiency • PWM/PFM Mode of Operation of the Boost Circuit • Up to 85% Efficiency • Up to 2 × 20mA Output • Two Built-in DACs for Independent (Digital) Brightness Control for Both Channels • LED’s Current Can be Duty-Cycle-Modulated between 0 to 20mA • Digital, Analog, and PWM Brightness Control • 2.7V to 5V Input Voltage Range • 0.5MHz Operating Frequency (8MHz internal clock) • Soft Start • Low Shutdown Current: ICC < 1µA • LED Short Circuit Protection • Minimal External Components Needed • Available in space saving 8-lead and 12-lead MLP Packages. The FAN5608 LED driver generates regulated output currents from a battery with input voltage varying between 2.7V to 5V. An internal NMOS switch drives an external inductor, and a Schottky diode delivers the inductor’s stored energy to the load. Proprietary internal circuitry continuously monitors the currrent on both strings and automatically adjusts the generated output DC voltage to the lowest minimum value required by the LEDs string with the highest summarized forward voltage. This adaptive nature of the FAN5608 ensures operation at the highest possible efficiency. Soft start circuitry prevents excessive current drawn from the supply during power on. Any number of LEDs can be connected in series as long as the summed forward voltages do not exceed the specified operating output voltage range. Although it is not required to have an equal number of LEDs connected in series within each branch, the highest efficiency and best current regulation is always achieved when an equal number of LEDs are serially connected. In the FAN5608 device, two internal two-bit D/A converters provide independent programmability of each output channel current. Analog programming of the output current is also possible in the FAN5608. To do this, ground the "B" pins and connect a resistor between the "A" pins and a fixed supply voltage. The output current can then be programmed to any desired value within its specified range. The FAN5608DMPX/FAN5608MPX version uses a single Applications • • • • • Cell Phones Handheld Computers PDAs, DSCs, MP3 Players Keyboard Backlights LED Displays Typical Application Digital Brightness Control CIN CIN L = 4.7µH VIN DAC Input For CH1 A1 B1 A2 DAC Input For CH2 B2 L = 4.7µH IND VOUT VOUT 2.7V to 5V GND CH2 DAC Input For CH1 CH1 NN NC DAC Input For CH2 IND IND VIN 4.7µF A1 B1 A2 B2 FAN5608HMPX IND FAN5608DHMPX 2.7V to 5V NC VOUT 4.7µF GND CH2 CH1 NC 4X4mm MLP-12 Package 4X4mm MLP-12 Package with internal Schottky diode with external Schottky diode Order Code: FAN5608DHMPX Order Code: FAN5608HMPX REV. 1.0.3 6/28/04 PRODUCT SPECIFICATION FAN5608 external resistor to set the current, and to turn the device ON and OFF. The FAN5608DMPX/FAN5608MPX is available in an 8-lead MLP package with or without an internal Schot- tky diode. The FAN5608DHMPX is available in a 12-lead MLP package with an internal Schottky diode. Typical Application (Continued) Analog Brightness Control CIN VIN R R A1 A2 VOUT GND 4.7µF CH2 CH1 2.7V TO 5V L = 4.7µH IND IND VIN VEXTERNAL R A1 R A2 FAN5608MPX VEXTERNAL IND IND FAN5608DMPX 2.7V TO 5V CIN L = 4.7µH VOUT NC GND 4.7µF CH2 CH1 3X3mm MLP-8 Package 3X3mm MLP-8 Package with internal Schottky diode with external Schottky diode Order Code: FAN5608DMPX Order Code: FAN5608MPX Definition of Terms Output Current Accuracy: reflects the difference between the measured value of the output current (LED) and programmed value of this current. ( I OUT measured – I OUT programmed ) × 100 Output Current Accuracy (%) = ----------------------------------------------------------------------------------------------------------I OUT programmed Current Matching: refers to the absolute value of difference in current between the two LED branches. ( I LED branch 1 – I LED branch 2 ) × 100 Current Matching (%) = ---------------------------------------------------------------------------------------------( I LED branch 1 + I LED branch 2 ) ⁄ 2 Efficiency: is expressed as a ratio between the electrical power into the LEDs and the total power consumed from the input power supply. ( V LED branch 1 × I LED branch 1 + V LED branch 1 × I LED branch 1 ) × 100 Efficiency (%) = -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------V IN × I IN Although this definition leads to a lower value than the boost converter efficiency, it more accurately reflects better system performance, from the user’s point-of-view. 2 REV. 1.0.3 6/28/04 FAN5608 PRODUCT SPECIFICATION Pin Assignments TOP-VIEW NC VIN 1 8 A1 VIN 1 8 A1 A2 2 7 CH1 A2 2 7 CH1 CH2 3 6 GND CH2 3 IND 4 5 VOUT IND 4 6 5 GND 11 12 10 IND 10 1 9 IND GND 1 9 IND CH1 2 8 CH2 CH1 2 8 CH2 B1 3 7 B2 B1 3 7 B2 NC 4 3x3mm 8-Lead MLP (External Schottky Diode) 11 GND 5 4 6 5 6 A1 VIN A2 A1 VIN A2 3x3mm 8-Lead MLP (Internal Schottky Diode) NC NC IND VOUT 12 4x4mm 12-Lead MLP(QUAD) 4x4mm 12-Lead MLP(QUAD) (Internal Schottky Diode) (External Schottky Diode) FAN5608DMPX/FAN5608MPX FAN5608DHMPX/FAN5608HMPX Pin Descriptions Pin No. 1 2 Pin Name FAN5608DHMPX FAN5608HMPX GND CH1 3 B1 GND FAN5608MPX GND GND VIN VIN Input Voltage A2 A2 DAC A2 CH1 DAC B1 CH2 A1 A1 5 VIN VIN CH2 IND Output LEDs Anode NC A2 7 B2 B2 GND Ground DAC B2 CH1 CH2 No Connection DAC A2 GND 8 Inductor Input Voltage VOUT A2 2nd LED Cathode DAC A1 IND 6 Ground 1st LED Cathode B1 4 Pin Function Description FAN5608DMPX CH1 CH2 1st LED Cathode 2nd LED Cathode A1 A1 DAC A1 9 IND IND SD Anode 10 IND IND Inductor 11 VOUT 12 NC REV. 1.0.3 6/28/04 Output LEDs Anode NC No Connection NC No Connection 3 PRODUCT SPECIFICATION FAN5608 Absolute Maximum Ratings Parameter Min Typ Max Unit VIN, A, B Voltage to GND -0.3 6 V VOUT to GND -0.3 24 V 8 V CH1, CH2 Voltage to GND Any LED Short Circuit Duration (Anode to Cathode) Indefinite Lead Soldering Temperature (10 seconds) 300 Thermal Resistance θjc 8 Operating Junction Temperature Range Storage Temperature Range -55 Electrostatic Discharge (ESD) Protection (Note 1, 2) HBM 4 CDM 1 °C °C/W 150 °C 150 °C kV DC Electrical Characteristics (VIN = 2.7V to 5V, TA = 25°C, unless otherwise noted. Boldface values indicate specifications over the ambient operating temperature.) Parameter Conditions Output Current Accuracy A = HIGH, B = HIGH Channel to Channel Current Matching A = HIGH, B = HIGH Efficiency (AVG) Min. 3 VIN > 3.0V Input B Threshold MHz 1100 FAN5608DHMPX/ FAN5608HMPX 850 1000 1150 Digital Mode Input A1, A2 Current Digital Mode Input B1, B2 Current Digital Mode µA 0.1 High VIN-0.7 VIN Low 0 0.6 Analog Mode % 0.5 1000 Digital Mode mA % 900 VA = VB = 0V Units 80 FAN5608DMPX/ FAN5608MPX Supply Current in OFF mode Input A1, A2 Threshold Max. 0.9 × INOM INOM = 20 1.1 × INOM Switching Frequency Multiplication Ratio Typ. V 1.2 High 0.6 × VIN VIN Low 0 0.3 × VIN VA = VIN 50 VA = 0 V 60 µA 0.1 µA 0.1 µA Max Unit 5 V 85 °C 18 V Recommended Operating Conditions Parameter Min Input Voltage Range 2.7 Operating Ambient Temperature Range -40 Output Voltage Range VIN Typ 25 Notes: 1. Using Mil Std. 883E, method 3015.7(Human Body Model) and EIA/JESD22C101-A (Charge Device Model). 2. Avoid positive polarity ESD stress at the cathode of the internal Schottky diode. 4 REV. 1.0.3 6/28/04 FAN5608 PRODUCT SPECIFICATION Block Diagram V IN OSC DBB IND COIL DRIVER V OUT IND LINEAR REGULATOR START-UP B1 A1 CH1 DAC1 REF CH1 BG W_OR REF REF CH2 B2 A2 LINEAR REGULATOR DAC2 CH2 POWER GOOD GND Note: In the 8-pin version (analog version only), pins B1 and B2 are omitted. Circuit Description When the input voltage is connected to VIN pin, the system is turned on, the bandgap reference acquires its nominal voltage and the soft-start cycle begins. Once “power good” is achieved (0.5mA in the diodes), the soft-start cycle stops and the boost voltage increases to generate the desired current selected by the input control pins. If the second channel is not selected, its output will go high to about VIN, and the diodes are turned off. The FAN5608 DC/DC converter automatically adjusts its internal duty cycle to achieve high efficiency. It provides tightly regulated output currents for the LEDs. An internal circuit determines which LED string requires the highest voltage in order to sustain the pre-set current levels, and adjusts the boost regulator accordingly. REV. 1.0.3 6/28/04 To maintain the regulated current at the selected value, the difference in the number of LEDs between branches should not exceed one. If only one branch is used, another branch should be disabled, connecting the corresponding DAC inputs to low. If the output external capacitor is shorted, the Schottky diode can be damaged, therefore such a condition should be avoided. LED Brightness Control The control inputs are A1, B1 for CH1 and A2, B2 for CH2. B1 and B2 are digital inputs, thus they require LOW (GND) and HIGH (VCC) control signals. In analog mode, A1 and A2 are connected to an external stable voltage source via an external resistor, and B1 and B2 inputs are connected to ground. The current flowing through the resistor is scaled by a factor of approximately 1000. 5 PRODUCT SPECIFICATION FAN5608 Digital Control The FAN5608’s digital decoder allows selection of the following modes of operation: OFF, 5mA, 10mA, 20mA per branch. A 0 1 0 1 B 0 0 1 1 ILED OFF 5mA 10mA 20mA Analog Control Inputs A1 and A2 are used to control the LED currents. Inputs B1 and B2 should be connected to GND (logic level “0”). An external resistor (R) is connected from A1 and/or A2 to a stable voltage source (VExternal) to control the LED current, ILED. The ILED can be determined using the formula and the graph below: V External – V Ref I LED = ----------------------------------------- × Multiplication Ratio R R=10Kohm I LED (mA) 20 15 R=100kohm 5 1.5 1.75 2 2.25 2.5 2.75 3 3.25 3.5 VExternal (V) PWM Control in Digital Mode The logic level HIGH, VH and logic level LOW, VL of the PWM signal should be: (VIN – 0.7V) < VH < VIN and 0 < VL < 0.6V The frequency of the PWM signal should be within 50Hz to 1kHz range; it can go up to 30kHz at any input if the other input is kept HIGH. In the case of FAN5608MPX and FAN5608DMPX, the B1 and B2 inputs are internally connected to GND and the PWM signal can be applied to A1 and A2 inputs only. Consequently, the maximum LED current, for 100% duty cycle, is 5mA on each channel. 6 The frequency of the PWM signal should be within 50Hz to 1kHz range. The VH sets the maximum LED current while the duty cycle sets the average current between 0 and ILEDmax. If the analog inputs A1 and/or A2 are driven in digital mode by an open drain output, it is important to choose the appropriate value of the pull-up resistor. Its resistance should be low enough to ensure less than 0.7V dropout, hence VA > (VIN – 0.7V) as required for HIGH logic level: 700mV R pull – up < ------------------ = 11.66kΩ 60µA A built-in over voltage protection circuit prevents the device from being damaged when it is powered up with no load. This circuit reduces the boost converter duty cycle, to a minimum thus limiting the output voltage to a safe value when no load condition is detected. If one of the two enable branches is accidentally disconnected, the converter continues the operation, however, the current in the remaining branch is no longer regulated and the actual branch current will be determined by the input voltage, the inductor value and the switching frequency. 25 0 1.25 VRef < VH < (VIN – 0.7V) and 0 < VL < 0.6V Open-Circuit Protection Where VRef = 1.22V, VRef < VExternal < (VIN – 0.7V) 10 PWM Control in Analog Mode The logic level HIGH, VH and logic level LOW, VL of the PWM signal should be: However, the FAN5608 can be damaged when a full load (more than six LEDs, driven by 20mA) is suddenly disconnected from VOUT. To protect the FAN5608 against this unlikely event, an external 24V Zener diode can be connected between VOUT and GND. Shutdown Mode Each branch can be independently disabled by applying LOW logic level voltage to the A and B inputs. When both branches are disabled, the FAN5608 enters Shutdown mode and the supply current is reduced to less than 1µA. REV. 1.0.3 6/28/04 FAN5608 PRODUCT SPECIFICATION PWM Control 1. A is PWM Controlled, B is Low. ILED (Average) = δ x 5mA, where δ is Duty Cycle. (Note 3) A Input (PWM) ss ss ss 30% Duty Cycle 70% Duty Cycle 1KHz B Input (0) 1KHz ILED (Average) = 0.7 x 5mA = 3.5mA ILED (Average) = 0.3 x 5mA = 1.5mA ILED ss 0mA OFF 2. A is High and B is PWM. ILED (Average) = 5mA + δ x 15mA, where δ is Duty Cycle. (Note 4) A Input B Input (PWM) ss ss ss ss 30% Duty Cycle 70% Duty Cycle 1KHz 1KHz ILED (Average) = 0.7 x 20mA + 0.3 x 5mA = 15.5mA ILED (Average) = 0.3 x 20mA + 0.7 x 5mA = 9.5mA ss ILED OFF 0mA 3. A and B are PWM. ILED (Average) = δ x 20mA, where δ is Duty Cycle. (Note 5) A Input (PWM) ss 70% Duty Cycle 1KHz B Input (PWM) ss ss 30% Duty Cycle ss 1KHz ss ss 30% Duty Cycle 70% Duty Cycle 1KHz 1KHz ILED (Average) = 0.7 x 20mA = 14mA ILED (Average) = 0.3 x 20mA = 6mA ILED 0mA ss OFF Notes: 3. Proportionally select the duty cycle to achieve a typical LED current between 1mA to 4mA. 4. Maximum PWM frequency can be 30KHz. 5. Proportionally select the duty cycle to achieve a typical LED current between 1mA and 19mA. REV. 1.0.3 6/28/04 7 PRODUCT SPECIFICATION FAN5608 Application Information Inductor Selection The inductor is one of the main components required by the boost converter to store energy. The amount of energy stored in the inductor and transferred to the load is controlled by the regulator using PWM and pulse skipping techniques. In most cases the FAN5608 operates the inductor in discontinuous conduction mode. To ensure proper operation of the current regulator over the entire range of conditions, select the inductor based on the maximum required power (POUT) and the minimum input voltage (VIN). 2 ( V IN ) × F L < -------------------------P OUT where units of L, VIN, and POUT are in µH, Volt, and Watt, respectively and F = 0.4 is a factor depending upon the FAN5608 architecture. A larger value input capacitor placed as close as possible to FAN5608 may be needed to reduce the input voltage ripple in noise sensitive applications. An additional LC filter between the battery and the FAN5608 input can help to further reduce the battery ripple to the level required by a particular application. Schottky Diode Selection The FAN5608HMPX and FAN56508MPX require the use of an external Schottky diode. This diode should be rated at 200mA to 500mA average rectified current and 20V maximum repetitive reverse voltage. The MBR0520L (Fairchild) Schottky diode is recommended. Driving Higher Current LEDs To increase the LED current range to 50mA, the CH1 and CH2 outputs may be connected, as shown below: Analog Brightness Control CIN L = 4.7µH IND 2.7V to 5.5V VIN VEXTERNAL A1 A2 IND FAN5608DMPX The above relation is applicable up to POUT = 0.6W and L = 4.3µΗ , or greater. At lower inductor values the efficiency decreases due to the resistive loss in the switching Power FET. Using L = 4.3µΗ and increasing the load to 12 LED x 20mA (POUT = 800mW) requires VIN > 3.5V to maintain a constant 20mA current through LEDs. The inductor L = 4.3µH ensures proper operation for 2 x 4 white LEDs with 20mA at 3.5V for VIN > 2.8V. GND 4.7µF CH1 CH2 For any lighter load or higher VIN, the inductance can be increased to improve the system efficiency. Application examples are given in Figure 1 through Figure 4. Digital Brightness Control The peak current in the inductor is: CIN L = 4.7µH IND 2.7V to 5.5V which gives the maximum rated current for the inductor. For L = 4.3µH, TON_Max = 1.25µS and VIN_Max = 4.2V, the inductor saturation current should be at least 1A. Capacitor Selection DAC Inputs A1 B1 A2 B2 FAN5608DHMPX T ON_Max × V IN_Max I = -----------------------------------------------L IND GND 4.7µF CH1 CH2 Low ESR capacitors should be used to minimize the input and output ripple voltage. Use of CIN = 4.7µF/6.3V and COUT = 4.7µF/25V type X5R/X7R multi layer ceramic capacitor is recommended. 8 REV. 1.0.3 6/28/04 FAN5608 PRODUCT SPECIFICATION The current feeding the string of LEDs is the sum of the currents programmed for each branch in digital or analog mode. Using all four inputs in digital mode, the LED current can be programmed within the 0 to 40 mA range, according to the following table : Input A1 Input B1 Input A2 Input B2 ILED (mA) 0 0 0 0 0 1 0 0 0 5 0 0 1 0 5 0 1 0 0 10 0 0 0 1 10 1 0 1 0 10 1 0 0 1 15 0 1 1 0 15 0 1 0 1 20 1 1 0 0 20 0 0 1 1 20 1 1 1 0 25 1 0 1 1 25 1 1 0 1 30 0 1 1 1 30 1 1 1 1 40 REV. 1.0.3 6/28/04 PCB Layout Consideration The FAN5608 is available in both a single Die Attach Pad (DAP) and a dual DAP package. In the single DAP package, DAP is connected to GND. In the dual DAP package, one DAP is connected to GND and another to VOUT, therefore it is not necessary to provide any external connection to the DAPs. Since the internal power dissipation is low, both the 3x3mm and 4x4mm MLP packages are capable of dissipating maximum power, without providing any PCB land pattern. When viewing the bottom of the package of a single DAP device, a single exposed metal island can be seen; when viewing the bottom of the package of a dual DAP device, two electrically isolated exposed metal islands can be seen. 9 PRODUCT SPECIFICATION FAN5608 Application Examples 1. Driver For Four White LEDs Efficiency vs Input Voltage Four LEDs 0.85 ILED = 20mA 2.7V to 5V IND VIN DAC Input For CH1 DAC Input For CH2 A1 B1 A2 B2 FAN5608DHMPX L = 6.8µH IND VOUT GND VOUT 4.7µF 0.80 CH2 CH1 NN NC 0.75 ILED = 10mA 0.70 2.5 3.0 3.5 4.0 4.5 5.0 5.5 Input Voltage (V) Figure 1 2. Driver For Six White LEDs Efficiency vs Input Voltage Six LEDs 0.90 0.85 ILED = 20mA IND VIN DAC Input For CH1 A1 B1 A2 DAC Input For CH2 B2 IND VOUT GND VOUT 4.7µF CH2 CH1 Efficiency L = 6.8µH FAN5608DHMPX 2.7V to 5V 0.80 0.75 0.70 NN NC 0.65 ILED = 10mA 0.60 2.5 3.0 3.5 4.0 4.5 5.0 5.5 Input Voltage (V) Figure 2 3. Driver For Eight White LEDs Efficiency vs Input Voltage Eight LEDs 0.90 L =4.7µH VIN DAC Input For CH1 A1 B1 A2 DAC Input For CH2 B2 IND VOUT VOUT ILED = 20mA 0.85 4.7µF GND CH2 Efficiency IND FAN5608DHMPX 2.7V to 5V CH1 NN NC 0.80 0.75 0.70 ILED = 10mA 0.65 0.60 2.5 Figure 3 10 3.0 3.5 4.0 4.5 5.0 5.5 Input Voltage (V) REV. 1.0.3 6/28/04 FAN5608 PRODUCT SPECIFICATION 4. Driver For 12 White LEDs L = 4.7µH VIN DAC Input For CH1 A1 B1 A2 DAC Input For CH2 B2 IND VOUT 0.80 VOUT ILED = 10mA 4.7µF 0.75 GND CH2 0.70 CH1 NN NC Efficiency IND FAN5608DHMPX 2.7V to 5V Efficiency vs Input Voltage Twelve LEDs 0.65 ILED = 20mA 0.60 0.55 0.50 2.5 3.0 3.5 4.0 4.5 5.0 5.5 Input Voltage (V) Figure 4 Note: Refer to the Application Information, if a higher load current compliance rating is required Typical Performance Characteristics TA = 25°C, CIN = COUT = 4.7µF, L = 4.7µH, unless otherwise noted. Shutdown Current vs Input Voltage Shutdown Current (µA) 0.065 0.060 0.055 0.050 0.045 0.040 0.035 2.5 REV. 1.0.3 6/28/04 3.0 3.5 4.0 4.5 Input Voltage (V) 5.0 5.5 11 PRODUCT SPECIFICATION FAN5608 TA = 25°C, CIN = COUT = 4.7µF, L = 4.7µH, unless otherwise noted. Efficiency vs LED Current 0.90 2X2 LEDs type QTPL670CiW CIN = 47µF, COUT = 4.7µF VIN = 3.6V Efficiency 0.85 0.80 0.75 L = 10µH L = 15µH L = 22µH 0.70 0.65 0 2 4 6 8 10 12 14 16 18 20 LED Current (mA) Regulated LED Current vs Input Voltage 10.5 5.0 9.5 4.8 A=1, B=0 Scale1 A=0, B=1 Scale2 A=1, B=1 Scale3 9.0 LED Current (mA) Scale2 LED Current (mA) Scale1 10.0 5.2 19 18 17 LED Current (mA) Scale3 20 5.4 16 4.6 2.5 3.0 3.5 4.0 4.5 5.0 8.5 5.5 15 Input Voltage (V) 12 REV. 1.0.3 6/28/04 PRODUCT SPECIFICATION FAN5608 Mechanical Dimensions 4x4mm 12-Lead MLP (Internal Schottky Diode) A 4.0 0.15 C GND B 2X 4.20 3.00 2.51 12 (0.60) VOUT 10 0.45 1 4.0 4.20 3.00 2.35 1.30 2 7 (0.60) 0.15 C TOP VIEW 9 4 2X 0.80 MAX 1.19 0.80 TYP 0.10 C 6 0.81 0.42 TYP (0.20) RECOMMENDED LAND PATTERN 0.08 C 0.05 0.00 SEATING PLANE C SIDE VIEW 2.51 MAX 1.19 0.75 0.35 4 0.81 0.45 6 3 7 1.30 1.60 2.35 MAX 0.80 9 1 PIN #1 IDENT 12 10 0.25~0.35 0.80 0.10 M C A B 0.05 M BOTTOM VIEW NOTES: A. CONFORMS TO JEDEC REGISTRATION MO-220, VARIATION WGGB, DATED 08/2002 B. DIMENSIONS ARE IN MILLIMETERS. C. DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994 13 REV. 1.0.3 6/28/04 FAN5608 PRODUCT SPECIFICATION Mechanical Dimensions 4x4mm 12-Lead MLP (External Schottky Diode) 0.15 C 4.20 3.00 2.51 A 4.0 B 2X 12 (0.60) 10 0.45 1 4.0 4.20 3.00 2.35 1.30 0.15 C 3 7 (0.60) 4 2X TOP VIEW 9 0.80 MAX 1.19 0.80 TYP 0.10 C 6 0.81 0.42 TYP (0.20) RECOMMENDED LAND PATTERN 0.08 C 0.05 0.00 SEATING PLANE C SIDE VIEW 2.51 MAX 1.19 0.75 0.35 4 0.81 0.45 6 3 7 1.30 1.60 2.35 MAX 0.80 9 1 PIN #1 IDENT 12 10 0.25~0.35 0.80 0.10 M C A B 0.05 M BOTTOM VIEW NOTES: A. CONFORMS TO JEDEC REGISTRATION MO-220, VARIATION WGGB, DATED 08/2002 B. DIMENSIONS ARE IN MILLIMETERS. C. DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994 REV. 1.0.3 6/28/04 14 PRODUCT SPECIFICATION FAN5608 Mechanical Dimensions 3x3mm 8-Lead MLP (Internal Schottky Diode) 2.54 1.37 1.27 GND A 3.0 0.15 C 8 2X VOUT 0.76 5 B 1.99 1.18 3.30 1.40 3.0 (0.65) 1 0.15 C 2X 0.65 TYP 4 0.42 MAX TOP VIEW RECOMMENDED LAND PATTERN 0.8 MAX 0.10 C (0.20) 0.08 C 0.05 0.00 SEATING PLANE C SIDE VIEW 2.54 MAX 1.37 1.26 4 1 PIN #1 IDENT 0.76 0.45 0.43 1.40 MAX 1.18 8 5 0.65 1.95 0.25~0.35 0.10 M C A B 0.05 M BOTTOM VIEW NOTES: A. CONFORMS TO JEDEC REGISTRATION MO-229, VARIATION VEEC, DATED 11/2001 B. DIMENSIONS ARE IN MILLIMETERS. C. DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994 15 REV. 1.0.3 6/28/04 FAN5608 PRODUCT SPECIFICATION Mechanical Dimensions 3x3mm 8-Lead MLP (External Schottky Diode) 3.0 0.15 C 2.37 A 4 2X 1 B 1.99 1.42 3.30 3.0 (0.65) 5 0.15 C 2X 0.65 TYP 8 0.47 TYP TOP VIEW 1.0 MAX RECOMMENDED LAND PATTERN 0.10 C (0.20) 0.08 C 0.05 0.00 C SIDE VIEW SEATING PLANE 1 0.45 0.20 2.25 MAX 4 1.30 MAX. 5 8 0.65 1.95 0.25~0.35 Ø 0.10 M C A B Ø 0.05 M BOTTOM VIEW NOTES: A. CONFORMS TO JEDEC REGISTRATION MO-229, VARIATION VEEC, DATED 11/2001 B. DIMENSIONS ARE IN MILLIMETERS. C. DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994 REV. 1.0.3 6/28/04 16 PRODUCT SPECIFICATION FAN5608 Ordering Information Product Number Package Type FAN5608 12-Lead MLP(4x4mm) 8-Lead MLP(3x3mm) Schottky Diode Order Code Internal FAN5608DHMPX External FAN5608HMPX Internal FAN5608DMPX External FAN5608MPX DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 6/28/04 0.0m 000 Stock#DS30005508 2003 Fairchild Semiconductor Corporation