8
DR-BT50
OUT
BAT
VCC
ISET
IN
VCC
VCC
VCC
STAT2
VSS
9
10
8
7
6
2
3
5
1
4
I
(DETECT)
ENABLE
V
(ISET)
V
I(BAT)
V
I(BAT)
V
I(BAT)
V
I(BAT)
V
(RCH)
V
(PRECHG)
V
(TAPER)
V
(TERM)
VSET
V
I(BAT)
V
I(SET)
V
I(SET)
V
(SLP)
V
O(REG)
V
O(REG)
V
O(REG)
VSET
CHG ENABLE
CHG ENABLE
CHG ENABLE
I
(FAULT)
ENABLE
I
(DETECT)
ENABLE
I
(FAULT)
ENABLE
DEGLITCH
DEGLITCH
DEGLITCH
DEGLITCH
RECHARGE
PRECHARGE
TAPER
TERM
STAT1
REFERENCE
AND BIAS
THERMAL
SHUTDOWN
CHARGE
CONTROL,
TIMER,
AND
DISPLAY
LOGIC
PG
PG
TS
IC261 BQ24010ADRCR
IC251 XC9103D093MR
1
FB
VDD
VDD
VDD
2
CE
3
EXT
5
4
GND
–
+
–
+
VREF WITH
SOFT START,
CE
PWM/PFM
CONTROLER
RAMP WAVE
GENERATOR,
OSC
BAFFER,
DRIVER
PWM
COMPARATOR
ERROR AMP
CURRENT
RIPPLE DETECT
AND FB
PHASE
COMPENSATION
Summary of Contents for DR-BT50 - Stereo Bluetooth Headset
Page 19: ...19 DR BT50 MEMO ...
