Product Info

LM746 Bluetooth® Dual Mode Audio Module
Standalone (With Embedded Bluetooth® 5 Compliant Stack)
Battery Charger
Battery Charger
Input Voltage, VCHG (a)
(a) = Reduced specification from 3.1 to 4.75. Full specification > 4.75V
(a) = Headroom = VCHG-VBAT
(a) = In the external mode, the battery charger meets all the previous charger electrical characteristics and the additional or superceeded elecectrical characteristics are listed in this table
Min
4.75 / 3.10
Typ
5.00
Max
5.75
Unit
V
Stereo Codec: Analogue to Digital Converter
Parameter
Resolution
Input Sample Rate Fsample
SNR
Conditions
-
-
fin = 1kHz Fsample
B/W = 20Hz--Fsample/2 8kHz
(20kHz max) 16kHz
A-Weighted 32kHz
THD+N < 1% 44.1kHz
1.6Vpk-pk input 48kHz
Min
-
8
-
-
-
-
-
Typ
-
-
93
92
92
92
92
Max
16
48
-
-
-
-
-
Unit
Bits
kHz
dB
dB
dB
dB
dB
Trickle Charge Mode
Charge current I
trickle
as percentage of fast charge current
Vfast rising threshold
Vfast rising threshold trim step size
Vfast falling threshold
Fast Charge Mode
Charge current during constant Max headroom > 0.55V
Current mode, I
fast Min headroom > 0.55V
Reduced headroom charge current,
as a percentage of I
fast
Mid headroom = 0.15V
I-CTRL charge current step size
Vfloat threshold, calibrated
Standby Mode
Voltage hysteresis on VBAT, V
hyst
Error Charge Mode
Headroom (a) error rising threshold
Headroom (a) error threshold hysteresis
External Charge Mode
Fast charge current I
fast
Control current into CHG_EXT
Voltage on CHG_EXT
External pass device
hfe
Sense voltage, between VBAT_SENSE and VBAT at max current
Min
8
-
-
-
Min
194
50
-
4.16
Min
100
Min
30
20
Min
200
0
0
-
195
Typ
10
2.9
0.1
2.8
Typ
200
10
-
10
4.20
Typ
-
Typ
-
-
Typ
-
-
50
200
Max
12
-
-
-
Max
206
100
-
4.24
Max
150
Max
50
30
Max
500
20
5.75
-
205
Unit
%
V
V
V
Unit
mA
mA
%
mA
V
Unit
mV
Unit
mV
mV
Unit
mA
mA
V
-
mV
Part No
Product
See Last Page
LM746
LM746
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