Electrical characteristics - all operational modes – Cirrus Logic CS35L03 User Manual
Page 9
CS35L01/03
DS909F1
9
ELECTRICAL CHARACTERISTICS - ALL OPERATIONAL MODES
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 be powered directly from the VBATT supply.
10. Refer to
for more information on Thermal Error functionality.
11. Under Voltage Lockout is the threshold at which a decreasing VBATT supply will disable device
operation.
Parameters
Symbol Test
Conditions
Min
Typ
Max Units
Max. Current from LFILT+
I
LFILT+
-
10
-
A
LFILT+ Output Impedance
Z
LFILT+
-
0.7
-
VBATT Limit for HD/FHD Mode
VB
LIM
-
3.0
-
VDC
Input Level for Entering LDO Operation in
HD/FHD Modes
V
IN-LDO
CS35L03
CS35L01
-
-
0.015•VBATT
0.029•VBATT
-
-
Vrms
Vrms
Input Level for Entering VBATT Operation in
HD/FHD Modes
V
IN-VBATT
CS35L03
CS35L01
-
-
0.09
0.19
-
-
Vrms
Vrms
LDO Entry Time Delay
t
LDO
-
1200
-
ms
LDO Level for HD/FHD Modes
V
LDO
-
1.0
-
V
Output Offset Voltage
V
OFFSET
Inputs AC coupled to GND
-
+/-1.5
-
mV
Amplifier Gain
A
V
CS35L03
CS35L01
-
-
12
6
-
-
dB
dB
Shutdown Supply Current
I
A(SD)
SD = Low
-
0.05
-
A
MOSFET On Resistance
R
DS(ON)
I
bias
= 0.5 A
-
270
-
m
Thermal Error Threshold
T
TE
-
150
-
C
Thermal Error Retry Time
R
TE
-
100
-
ms
Under Voltage Lockout Threshold
UVLO
-
2.0
-
V
Operating Efficiency
Output Levels at 10% THD+N
8
+ 33
H
Load
VBATT = 5 VDC
-
92
-
%
VBATT = 3.7 VDC
-
91
-
%
4
+ 33
H
Load
VBATT = 5 VDC
-
87
-
%
VBATT = 3.7 VDC
-
86
-
%