LM34919_15 Datasheet, PDF (5/21 Pages) Texas Instruments – Ultra-Small 40-V 600-mA Constant On-Time Buck Switching Regulator

www.ti.com
LM34919
SNOSAY2E – MAY 2007 – REVISED FEBRUARY 2013
Typical Performance Characteristics
Efficiency at 800 kHz
Efficiency at 2 MHz
Figure 3.
V_CC vs V_IN
7.5
7.0
I_OUT = 0 mA,
All frequencies
6.5
650 kHz,
6.0
I_OUT = 200 mA
5.5
1.3 MHz,
I_OUT = 200 mA
5.0
6.5 7.0 7.5 8.0 8.5 9.0
V_IN (V)
Figure 5.
I_CC vs Externally Applied V_CC
Figure 4.
V_CC vs I_CC
8
7
6
V_IN = 9V
V_IN 8 10V
V_IN = 8V
5
4
3
2
1 ^{VCC Externally Loaded}
F_S = 800 kHz
0
0
2
4
6
8
I_CC (mA)
10 12
Figure 6.
ON-TIME vs V_IN and R_ON
Figure 7.
Copyright © 2007–2013, Texas Instruments Incorporated
Product Folder Links: LM34919
Figure 8.
Submit Documentation Feedback
5