CS35L01 Datasheet, PDF (9/34 Pages) Cirrus Logic – 2.9 W Mono Class-D Audio Amplifier with Low Idle Current

CS35L01/03
ELECTRICAL CHARACTERISTICS - ALL OPERATIONAL MODES
Parameters
Symbol
Test Conditions
Max. Current from LFILT+
LFILT+ Output Impedance
VBATT Limit for HD/FHD Mode
(Note 6)
(Note 7)
I_LFILT+
Z_LFILT+
VB_LIM
Input Level for Entering LDO Operation in
HD/FHD Modes
(Note 8)
V_IN-LDO
CS35L03
CS35L01
Input Level for Entering VBATT Operation
in HD/FHD Modes
(Note 9)
V_IN-VBATT
CS35L03
CS35L01
LDO Entry Time Delay
t_LDO
LDO Level for HD/FHD Modes
VLDO
Output Offset Voltage
V_OFFSET Inputs AC coupled to GND
Amplifier Gain
A_V
CS35L03
CS35L01
Shutdown Supply Current
MOSFET On Resistance
Thermal Error Threshold
(Note 10)
I_A(SD)
R_DS(ON)
T_TE
SD = Low
I_bias = 0.5 A
Thermal Error Retry Time
(Note 10) R_TE
Under Voltage Lockout Threshold
UVLO
Total Group Delay
GD
Output Levels at 10% THD+N
Min
Typ
Max Units
-
10
- μA
-
0.7
-Ω
-
3.0
- VDC
- 0.014•VBATT - Vrms
- 0.027•VBATT - Vrms
-
0.09
- Vrms
-
0.18
- Vrms
-
800
- ms
-
1.0
-
V
-
+/-2
- mV
-
12
- dB
-
6
- dB
-
0.05
- μA
-
270
- mΩ
-
150
- °C
-
100
- ms
-
1.9
-
V
-
10
- μs
VBATT = 5 VDC
-
90
-%
Operating Efficiency
η
VBATT = 3.7 VDC
-
89
-%
VBATT = 5 VDC
-
84
-%
VBATT = 3.7 VDC
-
82
-%
Note:
6. No external loads should be connected to the LFILT+ net. Any connection of a load to this point may
result in errant operation or performance degradation in the device.
7. When VBATT is below this threshold (VB_LIM), operation is automatically restricted to SD mode.
8. When operating in HD or FHD mode and the differential input voltage remains below the input level
threshold (V_IN-LDO) for a period of time (t_LDO), the PWM outputs will be powered by the internally
generated LDO supply (VLDO).
9. When operating in HD or FHD mode and the differential input voltage is above this input level
threshold (V_IN-VBATT), the PWM outputs will powered directly from the VBATT supply.
10. Refer to Section 5.5 for more information on Thermal Error functionality.
DS909A2
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