SC194AMLTRT Semtech, SC194AMLTRT Datasheet - Page 11

• Manufacturer Part Number: SC194AMLTRT
• Description: IC SYNC BUCK CONV 1A 10-MLP
• Manufacturer: Semtech
• Type: Step-Down (Buck)r

Specifications of SC194AMLTRT

• 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: SC194AMLTR

© 2006 Semtech Corp.
POWER MANAGEMENT
Typical Characteristics
100
100
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
95
70
0.0001
90
85
80
75
0
0
0.0001
2.5
Effi ciency vs. Load Current V
Effi ciency vs. Load Current V
V
IN
=2.7V PSAVE
V
IN
=2.7V PSAVE
3.0
V
Effi ciency vs. Input Voltage
IN
V
=3.6V PSAVE
I
0.001
IN
0.001
OUT
=3.6V PSAVE
=500 mA(PWM)/50 mA(PSAVE)
V
V
IN
IN
V
=4.2V PSAVE
OUT
=4.2V PSAVE
3.5
=1V,PWM
I
V
I
OUT
OUT
OUT
Vin(V)
0.01
V
0.01
4.0
IN
V
=1.8V,PWM
=2.7V PWM
(A)
IN
(A)
=2.7V PWM
V
V
V
IN
OUT
IN
=3.6V PWM
=3.6V PWM
t=1V,PSAVE
V
V
IN
4.5
IN
=4.2V PWM
=4.2V PWM
OUT
OUT
V
OUT
0.1
0.1
=1.8V,PSAVE
= 1.8V
= 1.2V
5.0
1
5.5
1
11
100
100
95
90
85
90
80
70
60
50
40
30
20
10
80
75
70
90
80
70
60
50
40
30
20
10
0.0001
0
0
0.001
0.0001
Effi ciency vs. Load Current V
Effi ciency vs. Load Current V
PWM to PSAVE Hysteresis
V
IN
=2.7V PSAVE
V
IN
PSAVE MODE I
=4.2V PSAVE
0.001
V
V
IN
0.001
IN
=3.6V PSAVE
PSAVE Entry for decreasing I
=3.6V PSAVE
V
0.01
IN
V
=4.2V PSAVE
IN
=2.7V PSAVE
OUT
decreasing
I
I
OUT
OUT
I
OUT
0.01
0.01
(A)
(A)
V
(A)
IN
=2.7V PWM
OUT
PWM Mode
V
IN
V
=3.6V PWM
IN
=4.2V PWM
V
IN
V
0.1
=3.6V PWM
IN
PSAVE Exit for increasing I
V
=4.2V PWM
PSAVE Mode I
PRELIMINARY
OUT
OUT
IN
=2.7V PWM
0.1
= 1.5V
= 1.0V
0.1
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SC194A
OUT
increasing
OUT
1
1
1