bd5465gul ROHM Co. Ltd., bd5465gul Datasheet
bd5465gul
Related parts for bd5465gul
bd5465gul Summary of contents
Page 1
... 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 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 doesn’ ...
Page 2
... BD5465GUL ●Electrical Characteristic (Ta=+25℃, VDD=+3.6V, Unless specified otherwise) Parameter ＜All Device＞ Circuit current (no signal) Circuit current (shutdown) ＜Audio Feature＞ Limit output power Total harmonic distortion Maximum Gain ALC Limit level ALC Release level Switching frequency Start-up time Audio input resistance ＜ ...
Page 3
... BD5465GUL ●Measurement Circuit Diagram <Audio Characteristics Method of Evaluation > ■In case LC filter is not used SDNB Shutdown Signal Active Shutdown ■In case LC filter is used SDNB Shutdown Signal H: IC Active Shutdown 1uF 1uF C 1 Audio characteristics can be measured to insert LC filter between output pin and speaker load, if you don’ ...
Page 4
... BD5465GUL ●External Dimension Diagram Top View 5465 Lot No . Side View ●Block Diagram VDD B1 SDNB Shutdown C 2 Control VDD ALC IN IN GND ●Pin Explanation Pin No. Pin Name A1 IN+ A2 GND A3 OUT- B1 VDD B2 PVDD B3 PGND C1 IN- C2 SDNB C3 OUT+ www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. ...
Page 5
... BD5465GUL ●Application circuit example SHORT the power supply pin VDD (B1), PVDD (B2) at board pattern, then use singleness power supply. Shutdown Control SDNB Shutdown Signal H: IC Active L: IC Shutdown Audio Input Audio Input - Audio Differential Input Shutdown Control SDNB Shutdown Signal ...
Page 6
... BD5465GUL Shutdown Control SDNB Shutdown Signal H: IC Active L: IC Shutdown Audio Single End Input 0.1uF Audio Input 0.1uF Shutdown Control SDNB Shutdown Signal H: IC Active L: IC Shutdown 0.1uF 0.1uF Audio Input Audio Single End Input www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. ...
Page 7
... BD5465GUL is a Class-D amplifier, but, in relation to Audio Input and Output, is same with the conventional Class-AB amplifier. For simplicity purposes of the diagram, the Class-D amplifier output stage is omitted in the following explanation ...
Page 8
... BD5465GUL ○Gain calculation 【Differential Input】 +Battery B1 VDD Shutdown Signal SDNB Shutdown C 2 Control 150k Active ( Typ .) Shutdown ALC IN+ < Audio Source > Vins Ci VIN (=2 Vins IN- Vins PGND GND When Input Level is calculated at IC typical and audio source typical, when input coupling capacitor (Ci) value is large ...
Page 9
... BD5465GUL ●Audio Input Pin External LPF connection example ■External LPF connection example st The connection example of 1 -order LPF which is formed at Resistor R IN+/- (A1, C1 Pin) is shown below. The cut frequency of input LPF, together with the single end input and differential input is written below (2× ...
Page 10
... IC input resistor Ri and Gain will become: Gain = 20×log | Input resistor Ri of BD5465GUL and resistor value of feedback resistor Rf will become the following below, during ALC operation, changes at ±1dB step, and becomes 16 stages switch specs. #1. Ri=60kΩ(Typ.), Rf=240kΩ(Typ.)@Gain=12dB #2. Ri=66kΩ ...
Page 11
... Connect to input signal A2 B3 PGND GND Description SMD Size Capacitor, 0.1μF 0603 Capacitor, 10μF A (3216) Slide Switch 4mm X 10.2mm IC, BD5465GUL, 1.8mm X 1.8mm WLCSP Package 11/19 Technical Note Connect to GND Connect to Power Supply (VDD=+2.5～5.5V Connect to Speaker Manufacturer/ Part Number ...
Page 12
... BD5465GUL ●Evaluation Board PCB Layer www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. TOP Layer Silk Pattern TOP Layer Bottom Layer 12/19 Technical Note 2010.09 - Rev.A ...
Page 13
... BD5465GUL ●About IC Thermal Design The IC Characteristics has a big relation with the temperature that will be used, to exceed the maximum tolerance junction temperature, can deteriorate and destroy it. Instant destruction and long-time operation, from these 2 standpoints, there is a need to be careful with regards to IC thermal. Please be careful with the next points. ...
Page 14
... BD5465GUL Evaluation data - Typical Characteristics (1/4) ●Evaluation data – Typical characteristics (1/4) Efficiency - Output power f=1kHz, RL=8Ω+33uH 90 80 VDD = 5.0V 70 VDD = 3.6V 60 VDD = 2. 0.1 0.2 0.3 0.4 Po [W] Fig.5 Figure.1 Supply Current vs Output power f=1kHz, RL=8Ω+33uH 250 200 VDD = 3.6V 150 100 VDD = 2. 0.1 0.2 0.3 0.4 Output Power [W] Fig ...
Page 15
... BD5465GUL Evaluation data - Typical Characteristics (2/4) ●Evaluation data – Typical characteristics (2/4) Output power vs Load Resistance THD+N=1%, f=1kHz, 400Hz-30kHz BPF 2.0 1.8 1.6 1.4 1.2 1.0 VDD = 5.0V 0.8 VDD = 3.6V 0.6 0.4 0.2 0 RL[Ω] Fig.13 Figure.9 Total Harmonic Distortion + Noise vs Output Power RL=8Ω, f=1kHz, 400Hz-30kHz BPF 100 VDD = 2.5V VDD = 3.6V VDD = 5.0V 10 VDD = 2.5V 1 VDD = 3.6V VDD = 5 ...
Page 16
... BD5465GUL Evaluation data - Typical Characteristics (3/4) ●Evaluation data – Typical characteristics (3/4) Total Harmonic Distortion + Noise vs Frequency VDD=2.5V RL=8Ω, 400Hz-30kHzBPF 10 Po=25mW Po=100mW Po=250mW Po = 100mW 25mW 0 150mW 0.01 10 100 1k Frequency [Hz] Fig.19 Figure.15 Gain vs Frequency RL=8Ω, Vin=0.5Vpp, 400Hz-30kHz BPF VDD=2.5V 4 VDD=3.6V VDD=5.0V ...
Page 17
... BD5465GUL ●Evaluation data – Typical characteristics (4/4) Evaluation data - Typical Characteristics (4/4) ALC Limit Operation Waveform f=1kHz 2V / Div. INPUT OUTPUT - Time [msec] Fig.25 Figure.21 Waveform during Start- Div. INPUT Ton ( Wake-up Time ) OUTPUT -0.2 0 0.2 0.4 0.6 Time [msec] Figure.23 Fig.27 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. ...
Page 18
... BD5465GUL ●Notes for use (1) The numerical value and the data of the mention are a design representative value and are not the one which guarantees the value. ( convinced that it should recommend application circuit example but in case of use, we request the confirmation of the characteristic more sufficiently. When changing an external part fixed number and becoming use, it considers sprawl of the external part and our company's LSI including the transition characteristic in addition to the stillness characteristic and so on, see and fix an enough margin ...
Page 19
... BD5465GUL ●Ordering part number Part No. Part No. VCSP50L1 (BD5465GUL) 1PIN MARK 1.8±0.05 0. φ 0.25±0.05 0. φ 0.15)INDEX POST 0.4±0.05 P=0.5×2 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved Package GUL: VCSP50L1 <Tape and Reel information> ...
Page 20
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...