SC173MLTRT Semtech, SC173MLTRT Datasheet - Page 8

• Manufacturer Part Number: SC173MLTRT
• Description: IC BUCK SYNC ADJ 3A MLPD-10
• Manufacturer: Semtech
• Series: EcoSpeed™r
• Type: Step-Down (Buck)r

Specifications of SC173MLTRT

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.75 ~ 5.23 V
• Current - Output: 3A
• 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: SC173MLTR

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
0.00
0.00
0.00
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
0.75
0.75
: DS86C-B992AS-2R0N
:22 F
0.75
: DS86C-B992AS-2R0N
=22 F
= 54.9kOhm
: DS86C-B992AS-2R0N,
Output Current (A)
=22 Fx2
Output Current (A)
= 80.6kOhm
Output Current (A)
TON
1.50
1.50
= 54.9kOhm
1.50
2.25
2.25
2.25
3.00
3.00
3.00
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
0.00
0.00
0.00
Output Voltage vs Output Current
Output Voltage vs Output Current
Output Voltage vs Output Current
Black: Vin=5V
Red: Vin=4V
Blue: Vin=3.5V
0.75
0.75
0.75
Vin=5V, Vo=1.2V,
L
C
R
Red: PSAVE Mode
Blue: Forced Continuous PWM
Vo=1.205V, R
L
C
Forced Continuous Mode
OUT
Output Current (A)
Output Current (A)
Output Current (A)
OUT
TON
OUT
OUT
Vin=5V, Vo=3.3V,
L
C
R
Red: PSAVE Mode
Blue: Forced Continuous
OUT
OUT
TON
: DS86C-B992AS-2R0N
=22 F
: DS86C-B992AS-2R0N
= 54.9kOhm
:22 F
: DS86C-B992AS-2R0N,
=22 Fx2
PWM Mode
= 80.6kOhm
1.50
1.50
1.50
TON
= 54.9kOhm
2.25
2.25
2.25
3.00
3.00
3.00
SC173
8