LMZ10501_16 Datasheet, PDF (16/31 Pages) Texas Instruments – LMZ10501 1-A SIMPLE SWITCHER® Nano Module With 5.5-V Maximum Input Voltage

LMZ10501
SNVS677F – MAY 2011 – REVISED NOVEMBER 2014
8.2.3 Application Curves
8.2.3.1 V_OUT = 1.2 V
VIN
CIN
EN
VIN _VOUT
VREF
RT
FB
1.2V
VOUT
VCON
COUT
RB
PGND SGND
CVC
CIN 10 P&6.3V
COUT 10 PF &6.3V
CVC 470 pF &6.3V
RT 243 k: 1%
RB 63.4 k: 1%
0805 X7R or X5R
0805 X7R or X5R
0603 X7R or X5R
0603
0603
Figure 13. Schematic V_OUT = 1.2 V
VOUT RIPPLE
COUT = 10F 10V 0805 X5R
10mV/Div
250MHz BW
1µs/Div
Figure 15. Output Ripple V_OUT = 1.2 V
1.24
VIN=2.7V
VIN=3.3V
VIN=3.6V
1.23
VIN=5V
VIN=5.5V
1.22
1.21
1.20
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
LOAD CURRENT (A)
C002
Figure 17. Line and Load Regulation V_OUT = 1.2 V
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100
90
80
70
60
50
40
30
20
0
VIN=2.7V
VIN=3.3V
VIN=3.6V
VIN=5V
VIN=5.5V
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
LOAD CURRENT (A)
C001
Figure 14. Efficiency V_OUT = 1.2 V
COUT = 10F 10V 0805 X5R
50mV/Div
OUTPUT VOLTAGE
500mA/Div
20 MHz BW
LOAD CURRENT
500 µs/Div
Figure 16. Load Transient V_OUT = 1.2 V
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
C001
Figure 18. DC Current Limit V_OUT = 1.2 V, T_A=85°C
16
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