SC194BMLTRT Semtech, SC194BMLTRT Datasheet - Page 11

• Manufacturer Part Number: SC194BMLTRT
• Description: IC SYNC BUCK CONV 1A 10-MLP
• Manufacturer: Semtech
• Type: Step-Down (Buck)r

Specifications of SC194BMLTRT

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: Adjustable
• Current - Output: 1A
• Frequency - Switching: 1MHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MLP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Other names: SC194BMLTR

© 2006 Semtech Corp.
POWER MANAGEMENT
Typical Characteristics
100
100
90
80
70
60
50
30
20
10
40
100
90
80
70
60
50
40
30
20
10
0
0.0001
95
90
85
80
75
70
0
0.0001
2.5
V
V
IN
V
V
V
IN
IN
IN
=3.9V, PSAVE
IN
Effi ciency vs. Load Current V
=3.6V, PWM
=4.2V, PSAVE
=3.6V, PSAVE
=4.2V, PSAVE
Effi ciency vs. Load Current V
V
Effi ciency vs. Input Voltage V
IN
=3.9V, PWM
V
V
IN
3
IN
=5.0V, PSAVE
V
0.001
=5.0V, PSAVE
0.001
OUT
=2.5V,PWM
I
OUT
=500 mA(PWM)/50 mA(PSAVE)
3.5
V
IN
=4.2V, PWM
V
0.01
IN
0.01
=4.2V, PWM
V
OUT
V
IN
4
=3.3V,PSAVE
=5.0V, PWM
I
Vin (V)
I
OUT
OUT
(A)
(A)
V
IN
4.5
=5.0V, PWM
0.1
0.1
OUT
5
V
OUT
OUT
V
OUT
OUT
=3.3V,PWM
=2.5V,PSAVE
= 3.0V
= 3.6V
1
= 3.3V
1
5.5
10
10
6
11
100
100
90
80
70
60
50
40
30
20
10
0.0001
90
80
70
60
50
40
30
20
10
92
95
94
93
90
0.0001
91
0
0
0.1
V
V
V
V
V
IN
IN
IN
IN
IN
V
=4.2V, PSAVE
=3.9V, PSAVE
=3.9V, PWM
Effi ciency vs. Load Current V
=3.3V, PSAVE
=4.2V, PSAVE
IN
Effi ciency vs. Load Current V
=3.3V, PWM
Decreasing
PSAVE
0.15
Entry
I
V
OUT
V
IN
IN
=5.0V, PSAVE
Mode
0.001
PWM
=5.0V, PSAVE
0.001
PWM to PSAVE Hysteresis
0.2
0.25
V
0.01
IN
0.01
V
=4.2V, PWM
IN
V
=4.2V, PWM
IN
Increasing
I
I
=5.0V, PWM
OUT
PSAVE
OUT
I
EXIT
OUT
I
0.3
OUT
(A)
(A)
V
(A)
IN
=5.0V, PWM
0.1
0.1
0.35
OUT
OUT
0.4
www.semtech.com
SC194B
= 2.5V
= 3.3V
1
1
0.45
0.5
10
10