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| LTC3544B_15 Datasheet, PDF (5/18 Pages) Linear Technology – Quad Synchronous Step-Down Regulator | |||
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Typical Performance Characteristics
LTC3544B
Start-Up Curves, All Channels
VOUT100
VOUT200A
VOUT200B
VOUT300
RUNx
Load Step Response, 300mA
Channel
VOUT300
100mV/DIV
AC-COUPLED
IL
250mA/DIV
ILOAD
250mA/DIV
Load Step Response, 200mA
Channel A
VOUT200A
50mV/DIV
AC-COUPLED
IL
250mA/DIV
ILOAD
100mA/DIV
VIN = 3.6V
200µs/DIV
TA = 25°C
ALL CHANNELS UNLOADED
3544B G10
VIN = 3.6V
20µs/DIV
VOUT = 1.8V
TA = 25°C
ILOAD = 300µA TO 300mA
3544B G11
VIN = 3.6V
20µs/DIV
VOUT = 0.8V
TA = 25°C
ILOAD = 340µA TO 200mA
3544B G12
Load Step Response, 200mA
Channel B
VOUT200B
50mV/DIV
AC-COUPLED
IL
250mA/DIV
ILOAD
100mA/DIV
Load Step Response, 100mA
Channel
VOUT100
50mV/DIV
AC-COUPLED
IL
100mA/DIV
ILOAD
100mA/DIV
Load Step Crosstalk
VOUT100
10mV/DIV
VOUT200A
10mV/DIV
VOUT200B
10mV/DIV
VOUT300
100mV/DIV
VIN = 3.6V
20µs/DIV
VOUT = 1.5V
TA = 25°C
ILOAD = 340µA TO 200mA
3544B G13
VIN = 3.6V
20µs/DIV
VOUT = 1.2V
TA = 25°C
ILOAD = 200µA TO 100mA
3544B G14
VIN = 3.6V
40µs/DIV
3544B G15
TA = 25°C
300mA LOAD STEP ON VOUT300
OTHER CHANNELS LOADED 50% OF MAXIMUM
3544bfb
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