CS2001 Datasheet, PDF (5/8 Pages) ON Semiconductor – 1.2 A Switching Regulator, and 5.0 V, 100 mA Linear Regulator with RESET

PACKAGE PIN #
SO–20L
13
14
15
16
17
18
19
20
CS2001
PACKAGE PIN DESCRIPTION (continued)
PIN SYMBOL
V_CHG
GND5
GND6
GND7
GND8
NERD
RESETB
V_OUT
FUNCTION
Switched cap voltage tripler output.
Ground.
Ground.
Ground.
Ground.
No energy reserve detected output.
Reset output.
Linear regulator output.
VER
V_FB
COMP
I_BIAS
C_PUMP
V_BAT
NERD
RESETB
V_REF
0.25 V
V_{REF VFB/CPUMP}
–
Short
Detect
+
Preregulator
V_{CC Switcher}
– ^{Error Amp}
+
V_CC
+
Switcher
Comp
V_REF
–
Logic
Base
Drive
Voltage
Tripler
1.2 A
Current ^VCC
V_CC
Sense Amp +
–
Oscillator
V_REF
Bandgap 1.25 V
Reference
V_REF
Over
Temperature
7.25 V
V_REF Low
Battery
– _Detect
+
Linear
Error Amp
V_REF
+
–
Switcher
V_CC Shutdown
Comp
– _{0.5 × VCC}
+
V_REF
Logic
Current
Limit
No Battery
Drive
100 mA
V_CC
VER
Detect
V_CC
Reset
V_CHG
V_SW
GND
SWSD
V_OUT
Figure 2. Block Diagram
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