Texas Instruments SLVP089 manual Test Results, 2. Line/Load Regulation, 3.3-V Total Variation

Test Results

1.6 Test Results

Tables 1–2 and 1–3, along with Figures 1–5 through 1–8, show the test results for the SLVP089.

Table 1–2. Line/Load Regulation, 3.3-V (Total Variation)

Line/Load		0.3 A	0.9 A	1.5 A	3.0 A	5.0 A	Load Reg.
5.5 V	Vo(V)	3.330	3.329	3.328	3.324	3.320	0.18%
6.0 V	Vo(V)	3.330	3.329	3.328	3.324	3.320	0.18%
7.0 V	Vo(V)	3.330	3.328	3.328	3.325	3.321	0.15%
8.0 V	Vo(V)	3.330	3.329	3.328	3.325	3.321	0.15%
9.0 V	Vo(V)	3.331	3.330	3.328	3.325	3.321	0.18%
10 V	Vo(V)	3.331	3.330	3.328	3.325	3.321	0.18%
11 V	Vo(V)	3.331	3.330	3.328	3.325	3.321	0.18%
12 V	Vo(V)	3.331	3.330	3.329	3.325	3.321	0.18%
Line Reg.		0.03%	0.06%	0.03%	0.03%	0.03%

Note: The calculation for load regulation only accounts for the worst case of load variation under the normal voltage condition (i.e., 3.3 V at 3 A). All voltages were measured at the PCB header pins.

Table 1–3. Load Regulation and Ripple, 3.3-V (9-V Input)

Load	No Load	0.50 A	1.0 A	2.0 A	3.0 A	5.0 A	Reg.
Vo(V)	3.331	3.330	3.329	3.327	3.325	3.321	0.18%
Vo Ripple (mV P–P)	16	16	18	24	24	32
Vo Spikes (mV P–P)	0	24	24	34	48	60

Figure 1–5. Efficiency Vs Load

EFFICIENCY

vs

LOAD CURRENT

	100
	95		VI = 5.5 V
		VI = 9 V
– %	90
			VI = 12 V
Efficiency
	85
	80
	75
	70				4	5
	0	1	2	3
			Load Current – A

Hardware1-7