NJU72501 Piezo-sounder Driver with Multi-mode charge pump GENERAL DESCRIPTION The NJU72501 is a switching driver with multi mode charge pump for piezo-sounder. It can drive outputs up to 18Vpp from 3V supply. For adjusting the piezoelectric sounder sound volume, the charge pump can operate in either of a 1x, 2x or 3x mode. Because NJU72501 has the shutdown function, it is suitable for the battery application. PACKAGE OUTLINE NJU72501MJE APPLICATION Healthcare, Wrist Watches, Alarm Clocks, Handheld GPS devices, PDAs NJU72501MG2 NJU72501V FEATURES Operating Voltage : 2.3 to 5.0V(1x/ 2x Mode), 2.3 to 3.4V(3x Mode) Consumption current (Active) : IDS=0.3mA typ. (VIN=3V, DIN=4kHz, CPIEZO=15nF, 1x Mode) (Shutdown): IDS=1uA max. (VIN=3V , DIN=0V) Multi-Mode Charge Pump (1x/2x/3x) Input Signal Detector & Shutdown Control Output Short-circuit Protection Circuit C-MOS Technology Package Outline : EQFN12-JE, EQFN16-G2, SSOP14 Direct replacement to MAS6240 BLOCK DIAGRAM C1=0.1uF CP1 C2=0.1uF CN1 CP2 CN2 VIN CIN =0.1uF Oscillator (1MHz) Charge Pump (1x / 2x / 3x) VOUT COUT=0.1uF EN1 Control Logic EN2 1.7M DET DIN Level Shift Short Circuit Protection VO1 piezo sounder 1.7M GND VO2 Ver. 7.1 -1- NJU72501 TERMINAL CONFIGURATION (EQFN12-JE) 7pin 10pin Exposed Pad (Back Side) 4pin 1pin Top view PIN DESCRIPTION Pin No. SYMBOL 1 EN1 2 EN2 3 DIN 4 CN1 5 GND 6 VO2 7 VO1 8 CN2 9 CP1 10 VOUT 11 CP2 12 VIN Exp Pad Exposed Pad -2- FUNCTION Step-up Mode Switch Terminal 1 Step-up Mode Switch Terminal 2 Input Terminal Capacitor Connection Terminal GND Terminal Output Terminal 2 Output Terminal 1 Capacitor Connection Terminal Capacitor Connection Terminal Charge Pump Output Terminal Capacitor Connection Terminal Power Supply Terminal Exposed Pad connected to GND or left floating Ver.7.1 NJU72501 NJU3555 TERMINAL CONFIGURATION (EQFN16-G2) PIN DESCRIPTION Pin No. SYMBOL 1 NC 2 EN1 3 EN2 4 DIN 5 NC 6 CN1 7 GND 8 VO2 9 VO1 10 CN2 11 CP1 12 NC 13 VOUT 14 CP2 15 VIN 16 NC Exp Pad Exposed Pad Ver.7.1 FUNCTION Step-up Mode Switch Terminal 1 Step-up Mode Switch Terminal 2 Input Terminal Capacitor Connection Terminal GND Terminal Output Terminal 2 Output Terminal 1 Capacitor Connection Terminal Capacitor Connection Terminal Charge Pump Output Terminal Capacitor Connection Terminal Power Supply Terminal Exposed Pad connected to GND or left floating -3- NJU72501 TERMINAL CONFIGURATION (SSOP14) -4- Pin No. 1 SYMBOL EN2 FUNCTION Step-up Mode Switch Terminal 2 2 DIN Input Terminal 3 CN1 Capacitor Connection Terminal 4 5 GND VO2 GND Terminal Output Terminal 2 6 VO1 Output Terminal 1 7 CN2 Capacitor Connection Terminal 8 9 CP1 NC Capacitor Connection Terminal 10 VOUT Charge Pump Output Terminal 11 CP2 Capacitor Connection Terminal 12 VIN Power Supply Terminal 13 NC 14 EN1 Step-up Mode Switch Terminal 1 Ver.7.1 NJU72501 NJU3555 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Supply Voltage VIN Input Voltage VDIN Power Dissipation PD RATING UNIT 5.5V 1x Mode, 2x Mode 4.0V 3x Mode V -0.3 to VIN+0.3 1) 2) 480 * / 1300 * (EQFN12) 1) 2) 400 * / 1000 * (EQFN16) 3) 4) 440 * /550 * (SSOP14) -40 to +85 -40 to +125 V mW Operating Temperature Topr C Storage Temperature Tstg C 1) (Note) * EIA/JEDEC STANDARD Test board (76.2 x 114.3 x 1.6mm, 2layers, FR-4) mounting. The PAD connecting to GND in the center part on the back. 2) * EIA/JEDEC STANDARD Test board (76.2 x 114.3 x 1.6mm, 4layers, FR-4) mounting. The PAD connecting to GND in the center part on the back. Applying a thermal via hole mounted. 3) * EIA/JEDEC STANDARD Test board (76.2 x 114.3 x 1.6mm, 2layers, FR-4) mounting. 4) * EIA/JEDEC STANDARD Test board (76.2 x 114.3 x 1.6mm, 4layers, FR-4) mounting. o RECOMMENDED OPEARATING CONDITION (Ta=25 C) PARAMETER SYMBOL CONDITIONS 1x Mode, 2x Mode Operating Voltage VIN 1x Mode, 2x Mode, 3x Mode MIN 2.3 2.3 TYP 3.0 3.0 MAX 5.0 3.4 UNIT ELECTRICAL CHARACTERISTICS o (Ta=25 C,VIN=3V, C1=100nF, C2=100nF, COUT=100nF, CPIEZO=15nF, DIN=4kHz) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Output Voltage VOUT1 1x Mode 2.8 - 3 V VOUT2 2x Mode 5.2 - 6 V VOUT3 3x Mode 7.2 - 9 V - 140 240 A - 720 1200 A - 2500 4500 A - 0.3 - mA - 1.4 - mA - 3.9 - mA - 0.9 - mA - 3.6 - mA - 7.9 - mA - - 1 A 0.2 4 8 kHz 0.6 1 1.8 MHz IDD11 Operating Current 1 IDD12 IDD13 IDD21 Operating Current 2 IDD22 IDD23 IDD31 Operating Current 3 IDD32 IDD33 1x Mode CPIEZO=no load 2x Mode CPIEZO=no load 3x Mode CPIEZO=no load 1x Mode Single ended application 2x Mode Single ended application 3x Mode Single ended application 1x Mode Differential application 2x Mode Differential application 3x Mode Differential application Consumption Current at Shutdown ISD DIN=0V , * Input Frequency FIN Rectangular pulse Oscillating Frequency V FOSC ( 1 (*1: When 50msec or more maintains DIN, EN1, EN2 in 0 Ver.7.1 -5- NJU72501 ELECTRICAL CHARACTERISTICS o (Ta=25 C,VIN=3V, C1=100nF, C2=100nF, COUT=100nF, CPIEZO=15nF, DIN=4kHz) PARAMETER SYMBOL CONDITIONS MIN 1x Mode TON1 From DIN signal High to 90% VOUT TYP MAX UNIT 30 100 s - 90 200 s - 180 350 s 21 42 84 Ms 20 40 60 mA MIN TYP MAX UNIT steady state 2x Mode VOUT Start Delay Time TON2 From DIN signal High to 90% VOUT steady state 3x Mode Shutdown Delay Time Output Short-circuit Protection Limitation Current TON3 From DIN signal High to 90% VOUT steady state TOFF DIN=H -> L ISC CONTROL PART CHARACTERISTICS o Ta=25 C, VIN=3V PARAMETER SYMBOL CONDITIONS Control Terminal Voltage H VIH EN1 , EN2 , DIN pins 0.8*VIN - VIN V Control Terminal Voltage L VIL EN1 , EN2 , DIN pins 0 - 0.2*VIN V Control Terminal Current 1 IIH1 DIN=3V - 1.7 3.4 A Control Terminal Current 2 IIH2 VEN1 , VEN2=3V , DIN=3V - 1.7 3.4 A Control Terminal Current 3 IIH3 VEN1 , VEN2=3V , DIN=0V - - 1 A -6- Ver.7.1 NJU72501 NJU3555 CHARGE PUMP MODE SETTING DIN 0 1 1 1 1 EN1 0 0 1 1 EN2 0 1 0 1 Charge Pump Mode Shut Down Mode Shut Down Mode 1x Mode 2x Mode 3x Mode TIMING CHART C/P ON C/P OFF V VOUT t V TON DIN t V VO1 V TOFF t VO2 t Ver.7.1 -7- NJU72501 APPLICATION CIRCUIT 1 (Single-end output) C1=0.1uF CP1 C2=0.1uF CN1 CP2 CN2 VIN CIN =0.1uF Oscillator (1MHz) Charge Pump (1x / 2x / 3x) VOUT COUT=0.1uF EN1 Control Logic EN2 1.7M Short Circuit Protection DET DIN VO1 Level Shift piezo sounder 1.7M GND VO2 Recommended Parts APPLICATION CIRCUIT 2 (Differential output) C1=0.1uF CP1 Piezo-sounder/ Piezo-buzzer PKLCS1212E2400-R1(muRata) PKLCS1212E4001-R1(muRata) PKM13EPYH4000-A0(muRata) C2=0.1uF CN1 CP2 CN2 VIN CIN =0.1uF Oscillator (1MHz) Charge Pump (1x / 2x / 3x) VOUT COUT=0.1uF EN1 Control Logic EN2 1.7M DET DIN Level Shift Short Circuit Protection VO1 piezo sounder 1.7M GND VO2 -8- Ver.7.1 NJU72501 NJU3555 PACKAGE INFORMATION (EQFN12-JE) Ver.7.1 -9- NJU72501 PACKAGE INFORMATION (EQFN16-G2) - 10 - Ver.7.1 NJU72501 NJU3555 PACKAGE INFORMATION (SSOP14) [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. Ver.7.1 - 11 - Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: NJR: NJU72501MJE-TE2