LTC3850EUF#PBF Linear Technology, LTC3850EUF#PBF Datasheet - Page 6

• Manufacturer Part Number: LTC3850EUF#PBF
• Description: IC CNTRLR STP DWN SYNC 28-QFN
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3850EUF#PBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 23.3 V
• Current - Output: 100mA
• Frequency - Switching: 250kHz ~ 780kHz
• Voltage - Input: 4 ~ 24 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-QFN
• Primary Input Voltage: 24V
• No. Of Outputs: 2
• Output Current: 100mA
• No. Of Pins: 28
• Operating Temperature Range: -40°C To +85°C
• Msl: MSL 1 - Unlimited
• Supply Voltage Range: 4V To 24V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

LTC3850/LTC3850-1
TYPICAL PERFORMANCE CHARACTERISTICS
6
200mA TO 2.5A
200mA TO 2.5A
AC COUPLED
AC COUPLED
100mV/DIV
500mV/DIV
100mV/DIV
2A/DIV
2A/DIV
2V/DIV
2A/DIV
2A/DIV
I
I
V
V
V
LOAD
LOAD
OUT
OUT
OUT
V
FB
I
I
L
L
CIRCUIT OF FIGURE 14
V
Load Step
(Pulse-Skipping Mode)
CIRCUIT OF FIGURE 14
V
Prebiased Output at 2V
Load Step
(Burst Mode Operation)
IN
IN
= 12V, V
= 12V, V
OUT
OUT
= 1.8V
= 1.8V
2.5ms/DIV
40µs/DIV
40µs/DIV
500mV/DIV
V
TK/SS
38501 G06
38501 G08
38501 G04
PULSE-SKIPPING
200mA TO 2.5A
CONTINUOUS
AC COUPLED
V
OPERATION
Burst Mode
1.5Ω LOAD
100mV/DIV
OUT2
FORCED
2V/DIV
1V/DIV
2A/DIV
2A/DIV
MODE
2A/DIV
2A/DIV
MODE
2A/DIV
RUN1
, 1.8V
I
V
LOAD
OUT
I
L
CIRCUIT OF FIGURE 14
V
I
CIRCUIT OF FIGURE 14
V
Inductor Current at Light Load
Coincident Tracking
Load Step
(Forced Continuous Mode)
LOAD
IN
IN
= 12V, V
= 12V, V
= 100µA
OUT
OUT
= 1.8V
= 1.8V
40µs/DIV
1ms/DIV
1µs/DIV
V
3Ω LOAD, 1V/DIV
OUT1
, 3.3V
38501 G09
38501 G05
38501 G07
38501fc