MAS9251

DA9251.001 25 October, 2001 This is preliminary information on a new product under development. Micro Analog Systems Oy reserves the right to make any changes without notice. 5HJXODWHG &KDUJH 3XPS '&'& &RQYHUWHU • 6ROXWLRQ ZLWKRXW ,QGXFWRUV •  P$ 2XWSXW &XUUHQW • )L[HG  9 RU $GMXVWDEOH 2XWSXW 9ROWDJH • /RZ 1RLVH •  0+] 6ZLWFKLQJ )UHTXHQF\ • ,&&  µ$ LQ 6KXW 'RZQ • 0623 DQG &63 3DFNDJHV 0$6 '(6&5,37,21 MAS9251 is a low noise, constant frequency switched capacitor voltage doubler with regulated output. In the adjustable output version an external feedback pin allows the output voltage to be adjusted. The high switching frequency of MAS9251 guarantees low output ripple even with small ceramic capacitors. The shutdown control pin can be used to turn off the device for power saving. MAS9251 is equipped with soft-start feature, which reduces the circuit’s disturbance to power supply lines during start-up by limiting the maximum input current. Low operating input voltage and low external part count make MAS9251 ideal for small battery powered portable systems. An internal thermal protection circuit prevents the device from overheating. Also the maximum output current is internally limited. )($785(6 • Two versions: Adjustable Output Fixed 5 V Output • Solution without Inductors • Soft-Start • Output Accuracy < ± 4% • Low External Part Count • Low Noise • Input Voltage Range: 2.7 V… 4.5 V • Shutdown Control • 1 MHz Switching Frequency • Internal Thermal Shutdown • Short Circuit Protection • MSOP-8 and CSP Packages $33/,&$7,216 • LED Backlighting • W hite LED Driver • LED Brightness Control • Li-Ion Battery Backup Supplies • Local 3 V to 5 V Conversion • Smart Card Readers • PCMCIA Local 5 V Supplies 1 (11) DA9251.001 25 October, 2001 3,1 &21),*85$7,21 MSOP-8 9251 VOUT 1 8 VIN 7 FB / NC 6 CTRL 5 SGND YWW C+ 2 C- 3 PGND 4 TOP VIEW CSP PACKAGE PIN 1 DESIGNATOR C+ VIN PIN 1 VOUT GND CTRL BOTTOM VIEW vz 51vz YYWW XXXXX TOP VIEW C- Top Marking Information: vz = Product Specific Code, see p.11 Ordering Information (Y)YWW = Year Week XXXXX = Lot Number 3,1 '(6&5,37,21 3LQ 1DPH VOUT C+ CPGND SGND CTRL FB VIN 3LQ 1XPEHU LQ 0623− 1 2 3 4 5 6 7 8 3LQ 1XPEHU LQ &63 1 6 4 2 3 5 7\SH O I/O I/O G G I I/O P )XQFWLRQ Regulated Output Voltage Flying Capacitor Positive Terminal Flying Capacitor Negative Terminal Ground for Switching Currents Ground for Analog Blocks Enable/Disable Pin for Charge Pump (Logic 0 = Disable, Logic 1 = Enable) Feedback Input Pin Input Supply Voltage G = Ground, I = Input, O = Output, P = Power 2 (11) DA9251.001 25 October, 2001 %/2&. ',$*5$0 N 0$6$) )L[HG  9 2XWSXW 9ROWDJH &KDUJH 3XPS VIN SOFT START OUT IN VOUT C+ C- VREF TEMP. PROT. A B CTRL SGND CONTROL LOGIC CLKGEN 1MHz PGND N 0$6$6 $GMXVWDEOH 2XWSXW 9ROWDJH &KDUJH 3XPS VIN FB SOFT START OUT IN VOUT C+ C- VREF TEMP. PROT. A B CTRL SGND CONTROL LOGIC CLKGEN 1MHz PGND 3 (11) DA9251.001 25 October, 2001 $%62/87( 0$;,080 5$7,1*6 All voltages with respect to ground. 3DUDPHWHU Supply Voltage Output Voltage CTRL and FB Input Voltages ESD Rating Junction Temperature Storage Temperature Short Circuit Duration 6\PERO VIN VOUT VCTRL, VFB &RQGLWLRQV 0LQ -0.3 -0.3 -0.3 -0.3 0D[ 6 6 VIN + 0.3 6 2 +175 (limited) 8QLW V V V kV °C °C s VIN ≤ 5.7 V 5.7 V < VIN ≤ 6 V Human Body Model (HBM) TJmax TS tSC -55 +150 Indefinite Stresses beyond those listed may cause permanent damage to the device. The device may not operate under these conditions, but it will not be destroyed. 5(&200(1'(' 23(5$7,1* &21',7,216 All voltages with respect to ground. 3DUDPHWHU Operating Junction Temperature Operating Ambient Temperature Operating Supply Voltage 6\PERO TJ TA VIN &RQGLWLRQV 0LQ -40 -40 7\S 0D[ +125 8QLW °C °C V +27 3.6 +85 4.5 Output Voltage VOUT For MAS9251AF For MAS9251AS see application information p 7 For adjustable output version 2.7 0.84 5.3 (/(&75,&$/ &+$5$&7(5,67,&6 TA = -40°C to +85°C, typical values at TA = 27°C, VIN = 3.6 V, VOUT = 5.0 V, CIN = 1 µF, CFLY = 1 µF, COUT = 1 µF, VCTRL = VIN, unless otherwise specified. N 9ROWDJH 3DUDPHWHUV 3DUDPHWHU Output Voltage Tolerance Output Voltage Ripple Feedback Voltage Reference 6\PERO VOUT VR VFB &RQGLWLRQV VIN = 2.7 V… 4.5 V, IOUT ≤ 40 mA VIN = 3.1 V… 4.5 V, IOUT = 100 mA VIN = 3 V, IOUT = 100 mA All conditions (internally controlled reference) 0LQ -4 -4 7\S 0D[ +4 +4 8QLW %VNOM mVP-P V 80 0.84 N &XUUHQW 3DUDPHWHUV 3DUDPHWHU Continuous Output Current Short Circuit Current Feedback Input Current Current Consumption Shutdown Current 6\PERO IOUT ISC IFB ICC ISHDN &RQGLWLRQV VIN = 3.1 V… 4.5 V VIN = 3.6 V, RL = 0 Ω VFB = 0.84 V IOUT = 0 mA VCTRL = 0 V, VOUT = 0 V TA = +27°C TA = +85°C 0LQ 7\S 0D[ 100 8QLW mA mA µA mA µA 300 0.1 4.5 0.01 1 5 4 (11) DA9251.001 25 October, 2001 N 7KHUPDO 3URWHFWLRQ 3DUDPHWHU Threshold High Threshold Low 6\PERO TH TL &RQGLWLRQV 0LQ 145 135 7\S 160 150 0D[ 175 165 8QLW °C °C The hysteresis of 10 oC prevents the device from turning on too soon after thermal shut-down. N 6KXWGRZQ 7HUPLQDO 6SHFLILFDWLRQV 3DUDPHWHU Shutdown Voltage OFF State ON State Shutdown Control Input Pin Current N 3RZHU 'LVVLSDWLRQ 6\PERO VCTRL &RQGLWLRQV 0LQ −0.3 1.6 7\S 0D[ 0.55 VIN + 0.3 10 8QLW V µA ICTRL VCTRL = VIN VCTRL = 0 V 4 0 If CTRL-pin is not connected, MAS9251 is in OFF state (900 kΩ pull-down resistor to ground). 3DUDPHWHU Thermal Resistance MSOP-8 (Junction-to-Air) Maximum Power Dissipation 6\PERO RJA Pd &RQGLWLRQV typical PC board mounting 0LQ 7\S 206.3 0D[ 8QLW °C/W W any ambient temperature Pd MAX = Note 1 TJ MAX − TA R JA 80 Efficiency I‚‡rà η VIN = 3 V, IOUT = 50 mA % : TJ(MAX) denotes maximum operating junction temperature (+125°C), TA ambient temperature, and RJA junction-to-air thermal resistance (206.3°C/W). N '\QDPLF 3DUDPHWHUV 3DUDPHWHU Start-up Time (from control signal edge to 90% of VNOM) Switching Frequency 6\PERO tstart-up FOSC &RQGLWLRQV VCTRL = 0 to VIN, VIN = 3 V, IOUT ≤ 100 mA 0LQ 7\S 1 0D[ 8QLW ms 0.6 1 1.8 MHz 5 (11) DA9251.001 25 October, 2001 $33/,&$7,21 ,1)250$7,21 N )L[HG  9 9ROWDJH 6XSSO\ CFLY 1µF 3 C6 OFF ON CTRL 2 C+ 1 VOUT VOUT = 5 V VIN = 2.7 V... 4.5 V MAS9251AF 8 VIN NC 7 COUT 1µF CIN 1µF PGND 4 SGND 5 N $GMXVWDEOH 9ROWDJH 6XSSO\ CFLY 1µF 3 C6 OFF ON CTRL 2 C+ 1 VOUT R1 FB 7 R2 COUT 1µF VOUT = (1+R1/R2) * VFB VIN = 2.7 V... 4.5 V MAS9251AS 8 VIN CIN 1µF PGND 4 SGND 5 I ≥10µA N.B.! The values of R1 and R2 should be selected so that VOUT does not exceed 5.3 V. 3DUDPHWHU Output Capacitance 6\PERO COUT 0LQ 0.47 7\S 1 0D[ 8QLW µF 1RWH Low ESR (< 0.1 Ω) ceramic capacitor recommended, especially with high load current Flying Capacitance CFLY 0.68 1 µF Low ESR (< 0.1 Ω) ceramic capacitor required (note 2) Input Capacitance CIN 0.47 1 µF Low ESR (< 0.1 Ω) ceramic capacitor recommended, especially with high load current Values given on the table are minimum requirements unless otherwise specified. When selecting capacitors, tolerance and temperature coefficient must be considered to make sure that the requirement is met in all potential operating conditions. 1RWH : Polarized capacitor should never be used, since the capacitor voltage can reverse during operation. 6 (11) DA9251.001 25 October, 2001 $33/,&$7,21 ,1)250$7,21 N 0$6$6 0D[ 2XWSXW 9ROWDJH YV ,QSXW 9ROWDJH UhÃ2Ã!&ƒ8 6,5 5,5 d W b à ‡ ˆ ‚ W 4,5 3,5 2,5 1,5 2 2,2 2,4 2,6 2,8 3 3,2 3,4 3,6 3,8 WvÃbWd Vout_0 mA Vout_10 mA Vout_50 mA Vout_100 mA N /(' 'ULYHU ZLWK &XUUHQW )HHGEDFN DQG 3:0 %ULJKWQHVV &RQWURO CFLY 1µF 3 100 Hz PWM C6 CTRL 2 C+ 1 VOUT VOUT = VFB + VLED VIN = 2.7 V... 4.5 V MAS9251AS 8 VIN FB 7 COUT 1µF RS 56Ω RS 56Ω RS 56Ω RS 56Ω RS 56Ω CIN 1µF PGND 4 SGND 5 N :KLWH %DFNOLJKWLQJ /(' 'ULYHU ZLWK &RQVWDQW  9 2XWSXW DQG 3:0 %ULJKWQHVV &RQWURO CFLY 1µF 3 100 Hz PWM C6 CTRL 2 C+ 1 VOUT VOUT = 5 V VIN = 2.7 V... 4.5 V MAS9251AF 8 VIN NC 7 COUT 1µF RS 91Ω RS 91Ω RS 91Ω RS 91Ω RS 91Ω RS 91Ω CIN 1µF PGND 4 SGND 5 7 (11) DA9251.001 25 October, 2001 3$&.$*( 0623 287/,1( Gage plane E1 E F Land Pattern Recommendation P Q L N e D A2 A1 b 6\PERO A A1 A2 b b1 c c1 D E E1 e F G L (Terminal length for soldering) M N P Q R R1 0LQ 0 0.75 0.22 0.22 0.08 0.08 1RP 0D[ 1.10 0.15 0.95 0.38 0.33 0.23 0.18 8QLW mm mm mm mm mm mm mm mm mm mm mm mm mm mm R A R1 A c G A M b1 (b) Section A - A c1 0.85 0.30 0.40 3.00 BSC 4.90 BSC 3.00 BSC 0.65 BSC 4.8 0.65 0.60 0.80 0.41 1.02 0° 0.25 BSC 0.07 0.07 8° mm mm mm mm mm Dimensions do not include mold or interlead flash, protrusions or gate burrs. All measurement according to JEDEC standard MO-187. 8 (11) DA9251.001 25 October, 2001 62/'(5,1* ,1)250$7,21 Resistance to Soldering Heat Maximum Reflow Temperature Maximum Number of Reflow Cycles Seating Plane Co-planarity Lead Finish According to RSH test IEC 68-2-58/20 2*220°C 235°C 2 max 0.08 mm Solder plate 7.62 - 25.4 µm, material Sn 85% Pb 15% (0%266(' 7$3( 63(&,),&$7,216 P1 P2 E W F PO DO T BO AO A D1 Section A-A User Direction of Feed KO Pin 1 Designator 'LPHQVLRQ Ao Bo Do D1 E F Ko Po P1 P2 T W 0LQ0D[ 5.00 –0.10 3.20 –0.10 1.50 +0.1/-0.0 1.50 min 1.75 5.50 –0.05 1.45 –0.10 4.0 8.0 –0.10 2.0 –0.05 0.3 –0.05 12.00 +0.30/-0.10 8QLW mm mm mm mm mm mm mm mm mm mm mm mm 9 (11) DA9251.001 25 October, 2001 5((/ 63(&,),&$7,216 W2 A D Tape Slot for Tape Start B C N W1 5000 Components on Each Reel Reel Material: Conductive, Plastic Antistatic or Static Dissipative Carrier Tape Material: Conductive Cover Tape Material: Static Dissipative Carrier Tape Cover Tape End Start Trailer Components Leader 'LPHQVLRQ A B C D N W 1 (measured at hub) W 2 (measured at hub) Trailer Leader 0LQ 1.5 12.80 20.2 50 12.4 160 390, of which minimum 160 mm of empty carrier tape sealed with cover tape 0D[ 330 13.50 8QLW mm mm mm mm mm mm mm mm mm 14.4 18.4 Weight 1500 g 10 (11) DA9251.001 25 October, 2001 25'(5,1* ,1)250$7,21 3URGXFW &RGH MAS9251ASMF-T MAS9251ASMS-T MAS9251ACAF-T 3URGXFW Fixed 5 V Output Voltage Charge Pump Adjustable Output Voltage Charge Pump Fixed 5 V Output Voltage Charge Pump 7RS 0DUNLQJ Y] AF (T1) AS (T2) AF 3DFNDJH MSOP-8 MSOP-8 Chip Scale Package (CSP) (to be qualified) &RPPHQWV Tape and Reel Tape and Reel Tape and Reel /2&$/ ',675,%8725 0,&52 $1$/2* 6