SC2440 SEMTECH [Semtech Corporation], SC2440 Datasheet - Page 3

• Manufacturer Part Number: SC2440
• Description: 2.5 MHz Dual Switching Regulator with Integrated 2A Switches
• Manufacturer: SEMTECH [Semtech Corporation]

Notes: (1) Guaranteed by design, not tested in production.
(2) The maximum duty cycle specified corresponds to 1.4MHz switching frequency. Duty cycles higher than those specified can be
achieved by lowering the operating frequency.
(3) This device is ESD sensitive. Use of standard ESD handling precautions is required.
Unless specified: -40°C < T
POWER MANAGEMENT
Electrical Characteristics (Cont.)
COMP Switching Threshold
COMP Maximum Voltage
Channel Switching Frequecy
Maximum Duty Cycle
Switch Current Limit
Switch Saturation Voltage
Switch Leakage Current
Minimum Boost Voltage
Boost Pin Current
Minimum Soft-Start Voltage to Exit
Shutdown
Soft-start Charging Current
Soft-start Discharging Current
Minimum Soft-start Voltage to
Enable Overload Shutoff
FB Overload Threshold
Soft-start Voltage to Restart
Switching After Overload Shutoff
Power Good Threshold Below FB
Power Good Output Low Voltage
Power Good Pin Leakage Current
SYNC Input High Voltage
SYNC Input Low Voltage
SYNC Frequency
SYNC Pin Input Current
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
2005 Semtech Corp.
Parameter
A
< 85°C, -40°C < T
J
< 105°C, R
V
FB
= 0.9V, V
SYNC Frequency = 2 X Channel
V
OSC
FB
V
Frequency. (Note 1)
= 12.1K , V
SS
= 0.8V, I
SS1 Tied to SS2
= 2.3V, V
SS
Conditions
V
V
V
V
V
V
I
V
V
SW
V
= 2.3V, COMP Pin Open
PGOOD
I
I
I
(Note 2)
(Note 1)
SW
SW
SW
SS
SS
FB
SS
SYNC
SS
FB
SS
= -0.5A
= 0.9V
= 1.5V
= 1.5V
= -2A
= -2A
= -2A
Falling
Rising
Rising
PGOOD
= 0V
SYNC
= 2V
= 5V
3
FB
= 0, V
= 250µA
Falling
IN
= 5V, V
BOOST
= 8V
Min
0.7
1.2
0.2
0.7
3.4
80
80
2
2
0.74
Typ
100
155
2.2
1.4
2.6
0.3
1.8
0.4
1.8
0.8
0.2
1.1
0.1
90
20
60
60
10
2
2
1
Max
0.48
120
2.5
0.7
0.4
0.8
1.3
1.6
1.3
30
80
75
10
5
1
www.semtech.com
SC2440
Units
MHz
MHz
mA
mA
mV
µA
µA
µA
µA
µA
µA
°C
°C
%
V
V
A
V
V
V
V
V
V
V
V
V