LM34919C-Q1 Datasheet, PDF (9/29 Pages) Texas Instruments – LM34919C-Q1 Ultra Small 50V, 600 mA Constant On-Time Buck Switching Regulator

LM34919C-Q1
www.ti.com
1000
SNVS831A – SEPTEMBER 2013 – REVISED DECEMBER 2013
Typical Performance Characteristics (continued)
ON-TIME vs. V_IN and R_ON
Ron = 100k
Voltage at the R_ON Pin
0.6
Ron = 100k
Ron = 61.9k
Ron = 35.7K
Ron = 46.4k
Ron = 61.9k
0.5
Ron = 46.4k
0.4
100
0.3
0.2
0.1
10
0
6.00
10
20
30
40
50
INPUT VOLTAGE (V)
C007
Operating Current into V_IN
0.0
0
0.20
10
20
30
40
50
INPUT VOLTAGE (V)
C001
Shutdown Current into V_IN
5.00
0.15
4.00
3.00
0.10
2.00
1.00
No Load
FB = 3V
0.00
0 5 10 15 20 25 30 35 40 45 50
INPUT VOLTAGE (V)
C002
Gate Drive UVLO vs. Temperature
4.0
Driver On
Driver Off
3.5
3.0
2.5
2.0
±50 ±25 0
25 50 75 100 125 150
JUNCTION TEMPERATURE (|C)
C004
0.05
EN = 0V
0.00
0 5 10 15 20 25 30 35 40 45 50
INPUT VOLTAGE (V)
C006
Reference Voltage vs. Temperature
2.57
2.56
2.55
2.54
2.53
2.52
2.51
2.50
2.49
2.48
Vin = 12V
2.47
±50 ±25 0
25 50 75 100 125 150
JUNCTION TEMPERATURE (|C)
C007
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