DS2715 Dallas Semiconducotr, DS2715 Datasheet - Page 5

• Manufacturer Part Number: DS2715
• Description: NiMH Battery Pack Charge Controller
• Manufacturer: Dallas Semiconducotr

Figure 1. BLOCK DIAGRAM
Cbias
LED1
LED2
VDD
Rt
Div
Rt
HV
Pwr
HV
HV
Oscillator
Rt start-up test
Charge
Disable during
Timer
V
discharge
UVLO
Regulator
UVLO
Done, Waiting for event
25% Top-Off Charge
DS2715
to start charging
State Machine
(Set by Timer)
Fast Charge
Pre-Charge
Exit on Full
Or Timeout
Low Cells
Pwr
5 of 12
R
E
F
Ref
121mV,
33mV,
Mode
Ref
10mV
Vsns
Ref
Vsns negative WRT Vss
A
D
C
Latch is set until
Disch. Detect
Comp
@-0.01V
AMP
or
RS Latch
-
+
M
U
X
+
-
R
+
-
Ref
SNS+
Th
Vbatt
THM
VSS
VSS
Vch
SNS+
SNS-