Small-sized Class-D Speaker Amplifiers Analog Input Monaural Class-D Speaker Amplifier No.10101EAT08 BD5468GUL Description BD5468GUL 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 time until the limit release operation of output level is called the release time (or recovery time). This IC adopts high-speed release time (4ms/1dB Typ.) and suits the application which repeats big volume in the short time such as the camera shutter sound. 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: 3points 3) Ultra slim type package: 9pin WL-CSP(1.71.70.55mmMax.) 4) BD5460/61GUL (No ALC Function, Gain Fixed Goods) Pin Compatible Specs BD5465/66/67GUL (ALC Function, Gain Fixed Goods) Pin Compatible Specs 5) Maximum Gain: 13dB (Typ.) during ALC operation, 13-2dB 1dB Step 6) ALC high speed release (recovery) time: 4ms/1dB(Typ.) 7) Limit output power : 0.7W (Typ.) VDD=4.2V, RL=8, THD+N1% : 0.5W (Typ.) VDD=3.6V, RL=8, THD+N1% 8) Audio Analog Input (corresponds to single-end input / differential input) 9) Output LC filter free 10) Pop noise suppression circuit 11) Shutdown Function (use as mute at the same time) low shutdown current = 0.01A (Typ.) 12) 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 VDDmax Power Supply Voltage 7.0 V PVDDmax 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 Range Unit Temperature Topr -40 +85 VDD Power Supply Voltage +2.5 +5.5 V PVDD 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 BD5468GUL 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 6 mA CC V =VDD SDNB IC Shutdown Circuit current (shutdown) I 0.01 2 A SDN V =GND SDNB Audio Feature 0.035 0.044 0.055 BTL, f=1kHz, R =8 L Limit output power P W O 2 2 2 VDD VDD VDD THD+N1% , *1 BTL, fin=1kHz, R =8 L Total harmonic distortion T 0.2 1 % HD+N P =0.3W, *1 O Maximum Gain G 12 13 14 dB BTL, *1 MAX 1.5 1.68 1.89 ALC Limit level V Vpp BTL, *1 LIM VDD VDD VDD 1.19 1.34 1.5 ALC Release level V Vpp BTL, *1 REL VDD VDD VDD Switching frequency f 150 250 350 kHz OSC Start-up time T 0.73 1.02 1.71 msec ON Audio input resistance Ri 36 55 74 k Gain=13dB 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 Shutdown control Control terminal Conditions SDNB H IC operation (active) IC stop (shutdown) L ALC Parameter ALC Parameter Attack Time (Typ.) Release Time(Typ.) Gain Switch Step (Typ.) 1ms/1dB fin=100Hz 4ms/1dB 0.5ms/1dB fin=1kHz 1dB fin=10010kHz 0.05ms/1dB fin=10kHz The gain switch timing during ALC operation occurs at zero cross point of audio output voltage. For that, attack time, release time will change at input frequency fin. ALC Parameter is fixed. ALC operation doesnt correspond to noise of impulse. www.rohm.com 2010.09 - Rev.A 2/19 2010 ROHM Co., Ltd. All rights reserved.