TB2938HQ Datasheet, PDF (1/26 Pages) Toshiba Semiconductor – Bi-CMOS Linear Integrated Circuit Silicon Monolithic

Bi-CMOS Linear Integrated Circuit Silicon Monolithic
TB2938HQ
TB2938HQ
Maximum Power 49W BTL  4-ch Audio Power IC
1. Description
The TB2938HQ is a four-channel BTL power amplifier for car
audio applications.
This IC has a pure complementary P-ch and N-ch DMOS output
stage, offering maximum output power (P_OUT MAX) of 49W.
It includes a standby switch, mute function and various
protection features.
2. Applications
Power IC developed for car audio applications.
Weight: 7.7 g (typ.)
3. Features
 High output power, low distortion, and low noise property (for details, refer to the Table 3-1)
 Built-in various detection function (Output DC offset detection, Output short, Output layer short) (pin25)
 Built-in various mute functions (low voltage, standby on/off) (pin22)
 Built-in standby switch (pin4)
 Built-in mute switch (pin22)
 Start stop Cruising corresponded (at Vcc=6V)
 Built-in various protection circuits (thermal shut down, over-voltage, short to GND, short to VCC, and output to
output short, speaker current limiting)
Table 3-1 Typical Characteristics
(Note1,Note2)
Condition
Typ. Unit
Output power (P_OUT)
V_CC = 15.2 V, JEITA max
49
V_CC = 14.4 V, JEITA max
V_CC = 14.4 V, THD = 10%
44
W
29
THD = 10%
24
Total harmonic distortion (THD)
P_OUT = 5 W
0.01
%
Output noise voltage (V_NO) (Rg = 0 Ω),
BW = 20 Hz to 20 kHz
50
µV
Operating Supply voltage range (V_CC)
RL = 4 Ω
6 to 18 V
Note1: Typical test conditions: V_CC = 13.2 V, f = 1 kHz, R_L = 4 Ω, G_V = 26 dB, Ta = 25°C; unless otherwise specified.
Note2: Rg: signal source resistance
1
2011-11-08