BD27400GUL Datasheet, PDF (1/23 Pages) Rohm – Filter-Less Class-D Monaural Speaker Amplifier

Datasheet
Small-sized Class-D Speaker Amplifiers
Filter-Less Class-D
Monaural Speaker Amplifier
BD27400GUL
General Description
BD27400GUL is a low voltage drive class-D monaural
speaker amplifier that was developed for cellular
telephones, mobile audio products and the others.
The LC filter of the speaker output is unnecessary and
the external part can compose a speaker amplifier at
three.
Because the efficiency is high and is low consumption
power with the class-D operation, it is the optimal for the
application of the battery drive.
Also Current consumption of 0μA when standby and fast
transitions from standby to active with little pop noise
make it is suitable for applications that switch repeatedly
between suspended and active.
Key Specifications
 Operating voltage Range:
 Circuit current(No signal):
 Circuit current(Stand by):
 Output Power(RL=8Ω):
 Output Power(RL=4Ω):
 Start-up time:
 Operating Temperature Range:
2.5V to 5.5V
2.9mA(Typ)
0.1μA(Typ)
0.85W(Typ)
2.5W(Typ)
3.0msec(Typ)
-40°C to +85°C
Package(s)
VCSP50L1
W(Typ) x D(Typ) x H(Max)
1.50mm x 1.50mm x 0.55mm
Features
 High output power
2.5W typ.(VDD=5V, RL=4Ω, THD+N=10%, BTL）
 Very small package 9-Pin WL-CSP
 Gain selectable by external resistor
 LC Filter less
 Protection circuitry
(Short protection, Thermal shutdown,
Under voltage lockout)
 Analogue differential input / PWM digital output
 Pop noise suppression circuitry
VCSP50L1
Applications
 Mobile phone, Smart phone, Digital video camera
Typical Application Circuit(s)
STBY
C2
Ri ^IN+
A1
Ri ^IN-
C1
+V_BAT
CS
VDD B1
B2 PVDD
Bias
OSC
PWM
H-
Bridge
OUT-
A3
OUT+
C3
GND A2
B3 PGND
Figure 1. Application circuit
〇Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
〇This product has no designed protection against radioactive rays
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TSZ02201-0C1C0E754430-1-2
23.Apr.2014 Rev.003