SC174MLTRT Semtech, SC174MLTRT Datasheet - Page 8

• Manufacturer Part Number: SC174MLTRT
• Description: IC BUCK SYNC ADJ 4A MLPD-10
• Manufacturer: Semtech
• Series: EcoSpeed™r
• Type: Step-Down (Buck)r

Specifications of SC174MLTRT

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.75 ~ 5.23 V
• Current - Output: 4A
• Frequency - Switching: 200kHz ~ 1MHz
• Voltage - Input: 3 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MLPD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: SC174MLTR

Typical Characteristics
© 2010 Semtech Corporation
100.0
95.0
90.0
85.0
80.0
75.0
70.0
65.0
60.0
55.0
95.0
90.0
85.0
80.0
75.0
70.0
65.0
60.0
55.0
50.0
95.0
90.0
85.0
80.0
75.0
70.0
65.0
0
0
0
Efficiency vs Output Current
Efficiency vs Output Current
Efficiency vs Output Current
Vo=1.2V, R
L
C
Forced Continuous Mode
Red:Vin = 3.5V
Green: Vin = 4.0V
Blue: Vin = 5.0V
Vin=5V, Vo=1.2V,
L
C
R
Red: PSAVE Mode
Blue: Forced Continuous PWM Mode
OUT
OUT
OUT
Vin=5V, Vo=3.3V,
L
C
R
Red: PSAVE Mode
Blue: Forced Continuous PWM Mode
OUT
TON
OUT
OUT
TON
: DS86C-B992AS-2R0N
:22 F
: DS86C-B992AS-2R0N
=22 F
1
1
= 54.9kOhm
: DS86C-B992AS-2R0N,
1
=22 Fx2
= 80.6kOhm
Output Current (A)
Output Current (A)
Output Current (A)
TON
= 54.9kOhm
2
2
2
3
3
3
4
4
4
3.340
3.331
3.323
3.314
3.306
3.297
1.215
1.210
1.205
1.200
1.195
1.210
1.208
1.205
1.203
1.200
0
0
0
Output Voltage vs Output Current
Output Voltage vs Output Current
Output Voltage vs Output Current
Vin=5V, Vo=1.2V,
L
C
R
Red: PSAVE Mode
Blue: Forced Continuous PWM Mode
Vin=5V, Vo=3.3V,
L
C
R
Red: PSAVE Mode
Blue: Forced Continuous PWM Mode
OUT
OUT
TON
OUT
OUT
TON
1
1
1
Output Current (A)
Output Current (A)
Output Current (A)
: DS86C-B992AS-2R0N
=22 F
: DS86C-B992AS-2R0N,
=22 Fx2
= 54.9kOhm
= 80.6kOhm
Vo=1.205V, R
L
C
Forced Continuous Mode
Black: Vin = 5V
Red: Vin = 4V
Blue: Vin = 3.5V
OUT
OUT
: DS86C-B992AS-2R0N
:22 F
2
2
2
TON
= 54.9kOhm
3
3
3
4
4
4
SC174
8