SC600
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Parameter
Symbol
Conditions
Freq. = 262kHz or 650kHz
(2)
; Versions A & C
Freq. = 262kHz or 650kHz
(2)
; Versions B & D
Output Current
I
OUT
Freq. = 8kHz; Versions A & C
Freq. = 8kHz; Versions B & D
Freq. = 32kHz; Versions A & C
Freq. = 32kHz; Versions B & D
Enable = 1, CD4 = 0, CX8 = 0
Pump Frequency
f
PUMP
Enable = 1, CD4 = 1, CX8 = 0
Enable = 1, CD4 = 0, CX8 = 1
Enable = 1, CD4 = 1, CX8 = 1
Frequency Mode
Transition Time
Short Circuit Current
Input High Threshold
Input Low Threshold
Input High Current
Input Low Current
T
FMT
I
SC
V
IH
V
IL
I
IH
I
IL
V
IN
Mode Transition
Voltage
V
IN
Power Efficiency
from Battery to
Regulated Charge
Pump Output@262kHz
Output Ripple
Voltage
Transition time from one frequency
mode to any other frequency mode
(3)
V
OUT
= 0V, I
OUT
= I
IN
All Input Pins (Enable, CD4, CX8)
All Input Pins (Enable, CD4, CX8)
All Input Pins (Enable, CD4, CX8)
All Input Pins (Enable, CD4, CX8)
1.5x to 2x mode, Versions A & B
2x to 1.5x mode, Versions A & B
Hysteresis
1.5x to 2x mode, Versions C & D
2x to 1.5x mode, Versions C & D
Hysteresis
V
IN
= 3.60V, V
OUT
= 5.0V, I
OUT
= 60mA
η
V
IN
= 3.60V, V
OUT
= 4.5V, I
OUT
= 120mA
Freq = 262kHz, I
OUT
= 60mA
(2), (3)
3.43
3.48
30
3.23
3.33
40
3.50
3.58
80
3.30
3.40
100
92
83
25
45
1.3
0.4
10
10
3.56
3.64
180
3.36
3.46
180
-15%
-15%
-13%
-20%
32.768
8.192
262.14
650
1
180
600
Min
Typ
Max
60
120
5
10
20
40
+15%
+15%
+15%
+20%
Period
mA
V
V
μA
μA
V
V
mV
V
V
mV
%
%
mV
kHz
mA
Units
V
PP
Notes:
1) Version C has an extended input voltage range of operation at V
IN
= 2.60V to 5.5V.
2) 650kHz allows the use of a smaller bucket capacitor.
3) Guaranteed by design.
4) Peak-to-peak output ripple voltage with C
OUT
= C
BUCKET
=1μF and X5R dielectric.
©
2006 Semtech Corp.
3
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