KBA2338 KINGBOR | Alldatasheet
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Portable Electronic Devices PDAs and Smart Phones Portable Computer 9ïPIN FLIPïCHIP WCSP MARKING DIAGRAMS 8 PIN UDFN 2x2.2 KBA2338 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052 General Description Features Applications 3W F ilterless C lass-D Audio P ower Am plifier The kB2338A is a high efficiency, 3W mono class-D audio power amplifier. A low noise, filterless PWM architecture eliminates the output filter, reduci ng external component count, system cost, and simplifying design. Operating in a single 5V supply, kB2338A is capable of driving 4ȍ speaker load at a continuous average output of 3W/10% THD+N or 2W/1% THD+N. The kB2338A has high efficiency with speaker load compared to a typical class AB amplifier. With a 3.6V supply driving an 8 ȍ speaker , the efficiency for a 400mW power level is 88%. In cellular handsets, the earpiece, speaker phone, and melody ringer can each be driven by the kB2338A. The gain of kB2338A is externally configurable which allows independent gain control from multiple sources by summing signals from seperate sources. The kB2338A is available in space-saving WCSP and DFN packages. z Unique Modulation Scheme Reduces EMI Emissions z Efficiency at 3.6V With an 8-ȍ Speaker: í 88% at 400 mW í 80% at 100 mW z Low 2.38-mA Quiescent Current and 0.5-µA Shutdown Current z 2.5V to 6.0V Wide Supply V oltage z Optimized PWM Output Stage Eliminates LC Output Filter z Improved PSRR (í72 dB) Eliminates Need for a V oltage Regulator z Fully Differential Design Reduces RF Rectification and Eliminates Bypass Capacitor z Improved CMRR Eliminates Two Input Coupling Capacitors z Internally Generated 250-kHz Switching Frequency z Integrated Pop and Click Suppression Circuitry z 1.5mmu1.5mm Wafer Chip Scale Package (WCSP) and 3mmu3mm DFN-8 package z RoHS compliant and 100% lead(Pb)-free
Ordering Information
Order Number Package Type Marking Operating Temperature range kBA2338B-UDFN UDFN-8 xxxx -40 °C to 85°C kBA2338-WCSP WCSP-9 A20 5 -40 °C to 85°C March 2007 1 A20 GND INP OUTM VP SD OUTPINM NC
9ïPin FlipïChip WCSP GNDOUTM OUTP VP SD INMINP GND (Top View) GND INP OUTM VP SD OUTPINM NC UDFN8 (Top View) Data Processor GND OUTP Figure 1. Typical Application
Description
I Positive Differential Input. GND I Analog Ground. OUTM O Negative BTL Output. V p I Analog Positive Supply. Range: 2.5 V – 6.0 V. V p I Power Analog Positive Supply. Range: 2.5 V – 6.0 V. GND I Analog Ground. INM I Negative Differential Input. SD I The device enters in Shutdown Mode when a low level is applied on this pin. An internal 300 k/C0087 resistor will force the device in shutdown mode if no signal is applied to this pin. It also helps to save space and cost. OUTP O Positive BTL Output. Pin Configuration Pin Description Gain= 300 k /C0087 R i KBA2338 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052 March 2007 2 VP
V p Supply Voltage Active Mode Shutdown Mode 6.0 7.0 V V in Input Voltage ï0.3 to V CC +0.3 V I out Max Output Current (Note 1) 1.5 A P d Power Dissipation (Note 2) Internally Limited ï T A Operating Ambient Temperature ï40 to +85 T J Max Junction Temperature 150 T stg Storage Temperature Range ï65 to +150 R /C0113JA Thermal Resistance JunctionïtoïAir 9 ïPin FlipïChip UDFN8 90 (Note 3) °C/W ï ï ESD Protection Human Body Model (HBM) (Note 4) Machine Model (MM) (Note 5) > 2000 > 200 V ï Latchup Current @ T A = 85°C (Note 6) 9 ïPin FlipïChip UDFN8 /C003670 /C0036100 mA MSL Moisture Sensitivity (Note 7) Level 1 Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above t he Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. The device is protected by a current breaker structure. See “Current Breaker Circuit” in the Description Information section for more information. 2. The thermal shutdown is set to 160 °C (typical) avoiding irreversible damage to the device due to power dissipation. 3. For the 9 ïPin FlipïChip CSP package, the R /C0113JA is highly dependent of the PCB Heatsink area. For example, R /C0113JA can equal 195°C/W with 50 mm total area and also 135°C/W with 500 mm . When using ground and power planes, the value is around 90°C/W, as specified in table. 4. Human Body Model: 100 pF discharged through a 1.5 k /C0087 resistor following specification JESD22/A114. On 9ïPin FlipïChip, B2 Pin (V P is qualified at 1500 V. 5. Machine Model: 200 pF discharged through all pins following specification JESD22/A115. 6. Latchup Testing per JEDEC Standard JESD78. 7. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J ïSTDï020A. KBA2338 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052 Absolute Maximum Ratings March 2007 3
(Limits apply for T A = +25°C unless otherwise noted) (WCSP) Characteristic Symbol Conditions Min Typ Max Unit Operating Supply Voltage V p T A = ï40°C to +85°C 2.5 ï 6.0 V Supply Quiescent Current I dd V p = 3.6 V, R L = 8.0 /C0087 V p = 5.5 V, No Load V p from 2.5 V to 5.5 V, No Load T A = ï40°C to +85°C ï ï ï 2.15 2.61 ï ï ï 4.6 mA Shutdown Current I sd V p = 4.2 V T A = +25°C T A = +85°C ï ï 0.42 0.45 0.8 ï /C0109A V p = 5.5 V T A = +25°C T A = +85°C ï ï 0.8 0.9 1.5 ï /C0109A Shutdown Voltage High V sdih /C0045 1.2 ï ï V Shutdown Voltage Low V sdil /C0045 ï ï 0.4 V Switching Frequency F sw V p from 2.5 V to 5.5 V T A = ï40°C to +85°C 190 250 310 kHz Gain G R L = 8.0 /C0087 285 k /C0087 R i 300 k /C0087 R i 315 k /C0087 R i V V Output Impedance in Shutdown Mode Z SD /C0045 ï 300 ï /C0087 Resistance from SD to GND Rs ï ï 300 ï k/C0087 Output Offset Voltage Vos V p = 5.5 V ï 6.0 ï mV Turn On Time Ton V p from 2.5 V to 5.5 V ï 9.0 ï ms Turn Off Time Toff V p from 2.5 V to 5.5 V ï 5.0 ï ms Thermal Shutdown Temperature Tsd ï ï 160 ï Output Noise Voltage Vn V p = 3.6 V, f = 20 Hz to 20 kHz no weighting filter with A weighting filter ï ï ï ï /C0109Vrms RMS Output Power Po R L V p = 2.5 V V p = 3.0 V V p = 3.6 V V p = 4.2 V V p = 5.0 V ï ï ï ï ï 0.32 0.48 0.7 0.97 1.38 ï ï ï ï ï W R L V p = 2.5 V V p = 3.0 V V p = 3.6 V V p = 4.2 V V p = 5.0 V ï ï ï ï ï 0.4 0.59 0.87 1.19 1.7 ï ï ï ï ï W R L V p = 2.5 V V p = 3.0 V V p = 3.6 V V p = 4.2 V V p = 5.0 V ï ï ï ï ï 0.49 0.72 1.06 1.62 2.12 ï ï ï ï ï W R L V p = 2.5 V V p = 3.0 V V p = 3.6 V V p = 4.2 V V p = 5.0 V ï ï ï ï ï 0.6 0.9 1.33 2.0 2.63 ï ï ï ï ï W KBA2338 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052
Electrical Characteristics
(Limits apply for T A = +25°C unless otherwise noted) (WCSP) Characteristic UnitMaxTypMinConditionsSymbol Efficiency ï R L = 8.0 /C0087, f = 1.0 kHz V p = 5.0 V, P out = 1.2 W V p = 3.6 V, P out = 0.6 W ï ï ï ï R L = 4.0 /C0087, f = 1.0 kHz V p = 5.0 V, P out = 2.0 W V p = 3.6 V, P out = 1.0 W ï ï ï ï Total Harmonic Distortion + Noise THD+N V p = 5.0 V, R L = 8.0 /C0087, f = 1.0 kHz, P out = 0.25 W V p = 3.6 V, R L = 8.0 /C0087, f = 1.0 kHz, P out = 0.25 W ï ï 0.05 0.09 ï ï Common Mode Rejection Ratio CMRR V p from 2.5 V to 5.5 V V ic = 0.5 V to V p ï 0.8 V V p = 3.6 V, V ic = 1.0 V pp f = 217 Hz f = 1.0 kHz ï ï ï ï62 ï56 ï57 ï ï ï dB Power Supply Rejection Ratio PSRR V p_ripple_pkïpk = 200 mV, R L = 8.0 /C0087, Inputs AC Grounded V p = 3.6 V f = 217 kHz f = 1.0 kHz ï ï ï62 ï65 ï ï dB (Limits apply for T A = +25°C unless otherwise noted) (UDFN) Characteristic Symbol Conditions Min Typ Max Unit Operating Supply Voltage V p T A = ï40°C to +85°C 2.5 ï 6.0 V Supply Quiescent Current I dd V p = 3.6 V, R L = 8.0 /C0087 V p = 5.5 V, No Load V p from 2.5 V to 5.5 V, No Load T A = ï40°C to +85°C ï ï ï 2.15 2.61 ï ï ï 3.8 mA Shutdown Current I sd V p = 4.2 V T A = +25°C T A = +85°C ï ï 0.42 0.45 0.8 2.0 /C0109A V p = 5.5 V T A = +25°C T A = +85°C ï ï 0.8 0.9 1.5 ï /C0109A Shutdown Voltage High V sdih /C0045 1.2 ï ï V Shutdown Voltage Low V sdil /C0045 ï ï 0.4 V Switching Frequency F sw V p from 2.5 V to 5.5 V T A = ï40°C to +85°C 180 240 300 kHz Gain G R L = 8.0 /C0087 285 k /C0087 R i 300 k /C0087 R i 315 k /C0087 R i V V Output Impedance in Shutdown Mode Z SD /C0045 ï ï k/C0087 Resistance from SD to GND Rs ï ï 300 ï k/C0087 Output Offset Voltage Vos V p = 5.5 V ï 6.0 ï mV Turn On Time Ton V p from 2.5 V to 5.5 V ï 1.0 ï /C0109s Turn Off Time Toff V p from 2.5 V to 5.5 V ï 1.0 ï /C0109s Thermal Shutdown Temperature Tsd ï ï 160 ï Output Noise Voltage Vn V p = 3.6 V, f = 20 Hz to 20 kHz no weighting filter with A weighting filter ï ï ï ï /C0109Vrms KBA2338 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052
(Limits apply for T A = +25°C unless otherwise noted) (UDFN) Characteristic UnitMaxTypMinConditionsSymbol RMS Output Power Po R L V p = 2.5 V V p = 3.0 V V p = 3.6 V V p = 4.2 V V p = 5.0 V ï ï ï ï ï 0.22 0.33 0.45 0.67 0.92 ï ï ï ï ï W R L V p = 2.5 V V p = 3.0 V V p = 3.6 V V p = 4.2 V V p = 5.0 V ï ï ï ï ï 0.36 0.53 0.76 1.07 1.49 ï ï ï ï ï W R L V p = 2.5 V V p = 3.0 V V p = 3.6 V V p = 4.2 V V p = 5.0 V ï ï ï ï ï 0.24 0.38 0.57 0.83 1.2 ï ï ï ï ï W R L V p = 2.5 V V p = 3.0 V V p = 3.6 V V p = 4.2 V V p = 5.0 V ï ï ï ï ï 0.52 0.8 1.125 1.58 2.19 ï ï ï ï ï W Efficiency ï R L = 8.0 /C0087, f = 1.0 kHz V p = 5.0 V, P out = 1.2 W V p = 3.6 V, P out = 0.6 W ï ï ï ï R L = 4.0 /C0087, f = 1.0 kHz V p = 5.0 V, P out = 2.0 W V p = 3.6 V, P out = 1.0 W ï ï ï ï Total Harmonic Distortion + Noise THD+N V p = 5.0 V, R L = 8.0 /C0087, f = 1.0 kHz, P out = 0.25 W V p = 3.6 V, R L = 8.0 /C0087, f = 1.0 kHz, P out = 0.25 W ï ï 0.05 0.06 ï ï Common Mode Rejection Ratio CMRR V p from 2.5 V to 5.5 V V ic = 0.5 V to V p ï 0.8 V V p = 3.6 V, V ic = 1.0 V pp f = 217 Hz f = 1.0 kHz ï ï ï ï62 ï56 ï57 ï ï ï dB Power Supply Rejection Ratio PSRR V p_ripple_pkïpk = 200 mV, R L = 8.0 /C0087, Inputs AC Grounded V p = 3.6 V f = 217 kHz f = 1.0 kHz ï ï ï62 ï65 ï ï dB KBA2338 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052
Figure 2. Test Setup for Graphs
- Unless otherwise noted, C
input high pass filter is set to 10 Hz. Input capacitors are shorted for CMRR measurements.
- To closely reproduce a real application case, all measurements are performed using the following loads:
measurements are performed on the resistor (8 /C0087 or 4 /C0087) in differential mode.
- For Efficiency measurements, the optional 30 kHz filter is used. An RC lowïpass filter is selected with
(100 /C0087, 47 nF) on each PWM output.
Figure 33. Turn on Time Figure 34. Turn off Time load is driven differentially through two output stages. the amplified audio input signal within the frequency range. The switching frequency and its harmonics are fully filtered. guarantee a superior distortion value. ) of the NMOS and PMOS transistors is typically 0.4/C0032/C0087. turn on time to get full power to the load is 9 ms (typical). used as a mute signal as well. instantaneously after the rising edge on the shutdown pin. way also prevents from “pop & click” noise. current of the circuit does not exceed 1.5 /C0109A. an average current in the load of 820 mA.
R 8 /C0087 1.0 /C0109F 15 /C0109H 15 /C0109H Optional Audio Output Filter kBA2338 WCSP Application Schematic KBA2338 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052 March 2007 14 Ferrite Bead specification: Z=120 ȍ@100MHz , Current rating=3A FB FB 1nF 1nF VCC GND SP1 SPEAKER FB 0.1uF 1uF 1uF AUDIO IN SW1 Normal Shutdown INP INN GNDVDDA VDD1 OUTP OUTNGND SDB A1 A2 A3 B1 B2 B3 C1 C2 C3 150K 150K 4.7µ F KBA2338
9 PIN WCSP
A 0.540 0.660 A1 0.210 0.270 E D ïAï ïBï 0.10 C A ïCï 0.05 C 0.10 C 4 X SEATING PLANE e e 0.05 C 0.03 C A B 9 X b C B A 12 3 D 1.450 BSC E 0.330 0.390 b 0.290 0.340 e 0.500 BSC D1 1.000 BSC E1 1.000 BSC
1.450 BSC
Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052 March 2007 15 PACAGE DESCRIPTION
8 PIN UDFN, 2x2.2, 0.5P ÉÉ ÉÉ ÉÉ A B E D BOTTOM VIEW b e 0.10 B 0.05 A C C K NOTE 3 0.10 C PIN ONE REFERENCE TOP VIEW 0.10 C A (A3) 0.08 C 0.10 C C SEATING PLANE SIDE VIEW L 1 4 DIM MIN NOM MAX MILLIMETERS A 0.45 0.50 0.55 A1 0.00 0.03 0.05 A3 0.127 REF b 0.20 0.25 0.30 D 2.00 BSC D2 1.40 1.50 1.60 E 2.20 BSC E2 0.70 0.80 0.90 e 0.50 BSC K 0.20 ïïï ïïï L 0.35 0.40 0.45 ÇÇ ÇÇ ÇÇ ÇÇ ÇÇ ÇÇ ÇÇÇ ÇÇÇ ÇÇÇ ÇÇÇ ÇÇÇ ÇÇÇ 0.48 1.60 0.80 0.25 0.50 PITCH 2.15 DIMENSIONS: MILLIMETERS SOLDERING FOOTPRINT* KBA2338 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052
16 March 2007
TEL:(86)0755-26508846 FAX:(86)0755-26509052 www.kingbor.com PACAGE DESCRIPTION