BD6088GUL_11 ROHM [Rohm], BD6088GUL_11 Datasheet
BD6088GUL_11
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BD6088GUL_11 Summary of contents
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LED Driver s for LCD Backlights Mulitifunction Backlight LED Driver for Small LCD Panels (Charge Pump Type) BD6088GUL ●Description BD6088GUL is “Intelligent LED Driver” that is the most suitable for the cellular phone. It has 6LED driver for LCD Backlight ...
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BD6088GUL ●Electrical Characteristics (Unless otherwise specified, Ta=25°C, VBAT=3.6V, VIO=2.6V) Parameter 【Circuit Current】 VBAT Circuit current 1 VBAT Circuit current 2 VBAT Circuit current 3 VBAT Circuit current 4 VBAT Circuit current 5 VBAT Circuit current 6 【LED Driver】 LED current ...
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BD6088GUL ●Electrical Characteristics (Unless otherwise specified, Ta=25°C, VBAT=3.6V, VIO=2.6V) Parameter 2 【SDA, SCL】 Interface) L level input voltage H level input voltage Hysteresis of Schmitt trigger input L level output voltage Input current 【RESETB】 (CMOS Input Pin) L ...
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BD6088GUL ●Block Diagram / Application Circuit example 1 VBAT VBATCP VBAT1 10µF VIO ( ) ( ) ( ) RESETB SCL SDA I/O WPWMIN OUTCNT SBIAS Photo IC VDD 1μF GC1 GND GC2 IOUT Sensor SSENS BH1600FVC I/F SGND GC2 ...
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BD6088GUL ●Block Diagram / Application Circuit example 2 VBAT VBATCP VBAT1 10µF VIO ( ) ( ) ( ) RESETB SCL SDA I/O WPWMIN OUTCNT SBIAS Photo IC VDD 1μF GC1 GND GC2 IOUT Sensor SSENS BH1600FVC I/F SGND GC2 ...
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BD6088GUL ●Pin Arrangement ［Bottom View］ LEDGND B A INDEX ○ www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. T4 SSENS SGND VBAT1 SBIAS GC1 GC2 SDA LED5 LED6 SCL OUT1 LED4 OUTCNT WPWMIN LED2 LED3 ...
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BD6088GUL ●Package VCSP50L3 CSP small package SIZE : 3.50mm×3.50mm(A difference in public：X,Y Both ±0.05mm) Height : 0.55mm max 2 A ball pitch : 0.5 mm www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 7/51 Technical Note 2011.04 - Rev.A ...
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BD6088GUL ●Pin Functions No Ball No. Pin Name I VBATCP - 2 F4 VBAT1 - VIO - 8 B3 RESETB ...
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BD6088GUL ●Equivalent Circuit A F VBAT J VBAT VIO Q VBAT VBAT V VBAT VBAT www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved VBAT G H VBAT L M VBAT VBAT VBAT R S VBAT VBAT VBAT ...
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BD6088GUL 2 C BUS format ●I The writing/reading operation is based on the I ・Slave address ・Bit Transfer SCL transfers 1-bit data during H. SCL cannot change signal of SDA during H ...
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BD6088GUL ・ Writing protocol A register address is transferred by the next 1 byte that transferred the slave address and the write-in command. The 3rd byte writes data in the internal register written in by the 2nd byte, and after ...
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BD6088GUL ● Timing diagram SDA t LOW SCL t HD;STA t S ● Electrical Characteristics(Unless otherwise specified, Ta=25 Parameter 2 【 BUS format 】 SCL clock frequency LOW period of the SCL clock HIGH period of the SCL ...
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BD6088GUL ● Register List Address W 00h W VOUT(1) VOUT(0) 01h W WPWMEN WPWMPOL 02h W 03h W - IMLED(6) 04h W - IW5(6) 05h W - IW6(6) 06h W THL (3) THL (2) 07h W ...
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BD6088GUL ● Register Map Address 00h < Software Reset , DC/DC function setting > Address R/W Bit7 00h W VOUT(1) Initial 00h 0 Value Bit [7:6] : VOUT (1:0) “00” : VOUT Output Voltage 3.9V “01” : VOUT Output Voltage ...
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BD6088GUL Address 01h < LED Pin function setting> Address R/W Bit7 01h W WPWMEN WPWMPOL Initial 42h 0 Value Bit7 : WPWMEN External PWM Input “WPWMIN” terminal Enable Control (Valid/Invalid) “0” : External PWM input invalid “1” : External PWM ...
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BD6088GUL Address 02h < Power Control> Address R/W Bit7 02h W/R - Initial 00h - Value Bit [7:4] : (Not used) Bit3 : ALCEN ALC function Control (ON/OFF) “0” : ALC block OFF “1” : ALC block ON (Ambient Measurement) ...
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BD6088GUL Address 03h < Main group LED Address R/W Bit7 03h W - Initial 00h - Value Bit7 : (Not used) Bit [6:0] : IMLED (6:0) Main Group LED Current Setting at non-ALC mode “0000000” : “0000001” : “0000010” : ...
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BD6088GUL Address 04h < LED5 Current setting(Independence control) > Address R/W Bit7 04h W - Initial 00h - Value Bit7 : (Not used) Bit [6:0] : IW5 (6:0) LED5 “0000000” : “0000001” : “0000010” : “0000011” : “0000100” : “0000101” ...
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BD6088GUL Address 05h < LED6 Current setting(Independence control) > Address R/W Bit7 05h W - Initial 00h - Value Bit7 : (Not used) Bit [6:0] : IW6 (6:0) LED6 “0000000” : “0000001” : “0000010” : “0000011” : “0000100” : “0000101” ...
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BD6088GUL Address 06h < Main Current slope time setting > Address R/W Bit7 06h W THL(3) Initial C7h 1 Value Bit [7:4] : THL (3:0) Main LED current Down transition per 0.2mA step “0000” : 0.256 ms “0001” : 0.512 ...
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BD6088GUL Address 07h < ALC mode setting > Address R/W Bit7 07h W ADCYC(1) ADCYC(0) Initial 81h 1 Value Bit [7:6] : ADCYC(1:0) ADC Measurement Cycle “00” : 0.52 s “01” : 1.05 s “10” : 1.57 s “11” : ...
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BD6088GUL Address 08h < ADC Data adjustment > Address R/W Bit7 08h W SOFS(3) Initial 00h 0 Value Bit [7:4] : SOFS (3:0) ADC “1000” LSB “1001” LSB “1010” LSB “1011” LSB ...
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BD6088GUL Address 09h < Ambient level (Read Only) > Address R/W Bit7 09h R - Initial (00h) - Value Bit [7:4] : (Not used) Bit [3:0] : AMB (3:0) Ambient Level “0000” “0001” “0010” ...
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BD6088GUL Address 0Ah~19h < Ambient LED Current setting > Address R/W Bit7 0Ah~19h W IU*(7) Initial - Value “*” means 0~F. Bit7 : (Not used) Bit [6:0] : IU* (6:0) Main Current at Ambient Level for 0h~Fh “0000000” : “0000001” ...
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BD6088GUL Address 1Ah < Key Driver 2 value decision control setting > Address R/W Bit7 1Ah W - Initial 2Ah - Value Bit [7:6] : (Not used) Bit [5:4] : CHYS(1:0) Key DriverON Brightness hysteresis “00” : Ambient 1h Width ...
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BD6088GUL Address 1Bh < OUT KEY Output Mode setting > Address R/W Bit7 1Bh W - Initial 00h - Value Bit [7:5] : (Not used) Bit4 : KBMD Key back light mode choice (ALC/ Individual) “0” : KBLT ALC Control ...
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BD6088GUL Address 1Ch < OUT KEY Output level setting Address R/W Bit7 1Ch W/R - Initial 00h - Value Bit [7:5] : (Not used) Bit4 : KBEN KBLT output level setting (non-ALC mode) “0” : KBLT L 出力 “1” : ...
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BD6088GUL Address 1Dh < OUT KEY Output Mode setting > Address R/W Bit7 1Dh W FPWM Initial 00h 0 Value Bit7 : FPWM Key Driver, OUT1 ～ 4 PWM cycle setting “0” : 2.048 ms “1” : 4.096 ms Refer ...
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BD6088GUL ● Reset There are two kinds of reset, software reset and hardware reset (1) Software reset ・ All the registers are initialized by SFTRST="1". ・ SFTRST is an automatically returned to "0". (Auto Return 0). (2) Hardware reset ・ ...
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BD6088GUL ● DC/DC Explanation for operate Start DC/DC circuit operates when any LED turns ON. (DCDCFON=0) When the start of theDC/DC circuit is done, it has the soft start function to prevent a rush current. Force of VBAT and VIO ...
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BD6088GUL Mode transition The transition of boosts multiple transits automatically by VBAT Voltage and the VOUT Pin Voltage. The mode transition of the charge pump works as follows. ＜ x1.0→x1.5→x2.0 Mode transition ＞ The transition of the mode is done ...
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BD6088GUL ● LED Driver The LED driver of 6ch is constructed as the ground plan. Equivalence control is possible with LED1 - 4(LED4 can choose use/un-use with a register W4MD.). LED5, LED6 is controllable individually. As for LED5, LED6, grouping ...
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BD6088GUL ● The explanation of ALC (Auto Luminous Control) LCD backlight current adjustment is possible in the basis of the data detected by external ambient light sensor. ・ Extensive selection of the ambient light sensors (Photo Diode, Photo Transistor, Photo ...
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BD6088GUL (2) I/V conversion ・ The bias voltage and external resistance for the I-V conversion (Rs) are adjusted with adaptation of sensor characteristic ・ The bias voltage is selectable by register setup. Register : VSB “0” : SBIAS output voltage ...
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BD6088GUL (3) Gain control ・ Sensor gain switching function is built in to extend the dynamic range. ・ controlled by register setup. ・ When automatic gain control is off, the gain status can be set upin the manual. ...
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BD6088GUL (4) A/D conversion ・ The detection of ambient data is done periodically for the low power. ・ SBIAS and ADC are turned off except for the ambient measurement. ・ The sensor current may be shut in this function, it ...
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BD6088GUL (6) Average filter ・ Average filter is built in to rid noise or flicker. ・ Average is 16 times (7) Ambient level detection ・ Averaged A/D value is converted to Ambient level corresponding to Gain control and sensor type. ...
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BD6088GUL (8) LED current assignment ・ LED current can be assigned as each of 16 steps of the ambient level. ・ Setting of a user can do by overwriting, though it prepares for the table setup in advance. Register : ...
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BD6088GUL (10) LED current reset when mode change ・ When mode is changed (ALC↔Non ALC), it can select the way to sloping. Register : MDCIR “0” : LED current non-reset when mode change “1” : LED current reset when mode ...
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BD6088GUL (12) Key back light 2-value decision ・ Capable of comparing luminosity factor data with judgment threshold value with a hysteresis to determine binary judgment for illumination intensity. ・ Available for key backlight ON/OFF control based on illumination intensity. ・ ...
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BD6088GUL KBEN KBLT DUTY Expansion t= time per 1step×32 KBEN Duty=1.56%(At the time of step 1) KBLT Step OFF www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. Duty=93.75%(At the time of step 30) FPWM Expansion OUTSLP(1:0) ･･････ ...
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BD6088GUL ● OUT PWM Control ・ PWM A fixed signal is output from OUT1 ~ 4 terminal. ・ Allows a slope time to be set in the register via PWM. 32 levels of duties prepared as MAX Duty are sequentially ...
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BD6088GUL ① Setup of a slope (Except for OUTSLP [1:0] =00h) 1 OUT* OUT* OUTCNT 0 Duty(100%) OUT*DUTY Duty(0%) Lights off (Hi-z) OUT* terminal Lights on(L) OUT*DUTY show the H section of the output step NMOS ...
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BD6088GUL ・ 32 levels Duty ratio (H level section) becomes the following set point. Step Duty(%) 0 0.00 1 1.56 2 3.13 3 4.69 4 6.25 5 7.81 6 9.38 7 10.94 8 12.50 9 14.06 10 15.63 11 17.19 ...
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BD6088GUL ● I/O When the RESETB pin is Low, the input buffers (SDA and SCL) are disabling for the Low consumption power. SCL (SDA) RESETB Special care should be taken because a current path may be formed via a terminal ...
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BD6088GUL ● Operation Settings (Flow Example) 1. Backlight: Auto luminous Mode Apply supply voltage. Cancel reset. The backlight settings can be made at any timing Luminous control: Various so long as it precedes MLEDEN=1. settings MLEDMD=1 is mandatory. Backlight: Various ...
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BD6088GUL 3. Backlight: Un-auto luminous Mode Apply supply voltage. Cancel reset. The backlight settings can be made at any timing so long as it precedes MLEDEN=1. Backlight: Various settings MLEDMD=0 is mandatory. The backlight turns on. MLEDEN=1 MLEDEN=0 must be ...
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BD6088GUL ● PCB pattern of the Power dissipation measuring board st 1 layer(component layer th 5 layer th 7 layer www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved layer th 4 layer th 6 layer ...
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BD6088GUL ● Notes for use (1) Absolute Maximum Ratings An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down devices, thus making impossible to identify breaking mode such as a ...
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BD6088GUL ● Power dissipation (On the ROHM’s standard board) 1.6 1380mW 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 100 Ta（℃） www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. Information of the ROHM’s standard board ...
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BD6088GUL ● Ordering part number Part No. Part No. 6088 VCSP50L3 (BD6088GUL) 1PIN MARK 3.50±0.05 0.06 S 36- φ 0.25±0. φ 0.15)INDEX POST ...
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No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...