Small-sized Class-D Speaker Amplifiers Analog Input Monaural Class-D Speaker Amplifier No.10101EAT05 BD5465GUL Description BD5465GUL is a monaural Class-D speaker amplifier that contained ALC function for mobile phone, portable type electronic devices etc. LC filter of speaker output is not needed, can form monaural speaker amplifier with 3 external parts. ALC, short for Automatic Level Control, is a function that automatically adjusts up to the level of suppression of distortion (clip) of output wave form during excessive input. The output limit level uses a control type which doesnt follow up power supply. The time until the limit release operation of output level is called the release time (or recovery time). This IC adopts release time (560ms/1dB Typ.) and suits the applications which play music. Through Class-D operation, efficiency is high low power consumption that is why its suitable for battery drive application. The current consumption during shutdown when lowered to 0.01 A(Typ.), from the shutdown to the operation time is early and at the same time pop sound is few that is why its also suitable in repeating active and shutdown. Feature 1) Contains Digital ALC (Automatic Level Control) Function 2) External Parts: 3 points 3) Ultra slim type package: 9pin WL-CSP (1.81.80.55mmMax.) 4) BD5460 / 61GUL (No ALC Function, Gain Fixed Goods) Pin Compatible Specs BD5466 / 67 / 68GUL (ALC Function, Gain Fixed Goods) Pin Compatible Specs 5) Maximum Gain: 12 dB (Typ.) during ALC operation, +12-3dB 1dB Step 6) ALC limit level control type : Fixed type doesnt follow up power supply 7) Limit output power: 0.6W (Typ.) VDD=3.45.5V, RL=8 8) ALC release (recovery) time: 560ms/1dB (Typ.) 9) Audio Analog Input (corresponds to single-end input / differential input) 10 Output LC filter free 11) Pop noise suppression circuit 12) Shutdown Function (use as mute at the same time) low shutdown current = 0.01A (Typ.) 13) Contains protection circuit: output short, thermal shutdown, under voltage lockout (UVLO) Applications Mobile phone, Portable audio device, PND, DSC, Note-PC etc. Absolute Maximum Rating(Ta=+25) Parameter Symbol Ratings Unit Power Supply Voltage VDDmax / PVDDmax 7.0 V Power Dissipation Pd 690* mW Storage Temperature Range Tstg -55 +150 SDNB Pin Input Range V -0.3VDD+0.3 V SDNB IN+, IN- Pin Input Range V -0.3VDD+0.3 V IN * In case Ta=+25 or more, 5.52 mW decrease per 1 When mounting Rohm Typical Board 50.0mm58.0mm (Material: Glass Epoxy) Operation Range Parameter Symbol Ranges Unit Temperature Topr -40 +85 Power Supply Voltage VDD / PVDD +2.5 +5.5 V ALC operating Power Supply Voltage VDD / PVDD +3.4 +5.5 V ALC ALC Common Mode Input Voltage Range V +0.5 VDD-0.8 V IC This product is not designed for protection against radioactive rays. www.rohm.com 2010.09 - Rev.A 1/19 2010 ROHM Co., Ltd. All rights reserved. Technical Note BD5465GUL Electrical Characteristic (Ta=+25, VDD=+3.6V, Unless specified otherwise) Limits Parameter Symbol Unit Conditions Min. Typ. Max. All Device IC Active, No Load Circuit current (no signal) I 3.3 6.6 mA CC V =VDD SDNB IC Shutdown Circuit current (shutdown) I 0.01 2 A SDN V =GND SDNB Audio Feature BTL, f=1kHz, R =8 L Limit output power P 0.4 0.6 W O THD+N1% , *1, *2 BTL, fin=1kHz, R =8 L Total harmonic distortion T 0.2 1 % HD+N P =0.4W, *1 O Maximum Gain G 11 12 13 dB BTL, *1 MAX ALC Limit level V +6 +7 +8 dBV BTL, *1, *2 LIM ALC Release level V +4 +5 +6 dBV BTL, *1, *2 REL Switching frequency f 150 250 350 kHz OSC Start-up time T 0.73 1.02 1.71 msec ON Audio input resistance Ri 40 60 80 k Gain=12dB Control Terminal H V 1.4 VDD V IC Active SDNBH SDNB terminal Threshold voltage L V 0 0.4 V IC Shutdown SDNBL H I 12 24 36 A V =3.6V SDBNH SDNB SDNB terminal Inflow Current L I -5 5 A V =0V SDNBL SDNB *1 Filter bandwidth for measurement: 40030kHz, LC filter for AC measurement: L=22H / C=1 F, BTL: Voltage between A3,C3 *2 The reference value when the device and each component is directly mounted to the Rohm typical board. Shutdown control Control terminal Conditions SDNB H IC operation (active) L IC stop (shutdown) ALC Parameter ALC Parameter Attack Time (Typ.) Release Time(Typ.) Gain Switch Step (Typ.) 1ms/1dB fin=100Hz 560ms/1dB 0.5ms/1dB fin=1kHz 1dB fin=10010kHz 0.05ms/1dB fin=10kHz The ALC automatically adjusts the audio output level, and a function that prevents the over output to the speaker. When ALC function is working, gain switches at zero-cross point of audio output normally. If the time that audio output reaches to zero-cross point is long, gain switches at about 1msec later (attack time), at about 25msec later (release time). So, attack time and release time will change at audio input frequency. ALC parameter is fixed. ALC operation doesnt correspond to noise of impulse. Also, ALC limit level is independent type from power supply voltage (fixed type). When power supply voltage goes down during ALC operation, there will be a risk of generating distortion at the speaker output wave. www.rohm.com 2010.09 - Rev.A 2/19 2010 ROHM Co., Ltd. All rights reserved.