Texas Instruments TPS769 Series, User Manual, Page: 21 / 25

Test Setup
3-3 Testing
Table 3–1. Bill Of Materials
REF DES QTY PART NUMBER DESCRIPTION MFG SIZE
C1 1 ECJ-2VF1C105Z Capacitor, ceramic, 1
µ
F, 16 V,
+80%–20%, Y5V
Panasonic 805
C2 Not used 603
C3 1 TPSC475K035R0600 Capacitor, tantalum, 4.7
µ
F, 35 V, 20% AVX C
C3 (Alt) ECST1AC226R Capacitor, tantalum, 22
µ
F, 10 V, 20% Panasonic C
C4 1 GRM39X7R102K050A Capacitor, ceramic, 1000 pF, 50 V, 10%,
X7R muRata 603
J1 3 CA26DA-D36K-0FA Clip, surface-mount, 0.040
″
board, 0.090
″
stand-off
NAS Interplex 0.1
″
J2 CA26DA-D36K-0FA Clip, surface-mount, 0.040
″
board, 0.090
″
stand-off
NAS Interplex 0.1
″
J3 CA26DA-D36K-0FA Clip, Surface-mount, 0.040
″
board, 0.090
″
stand-off
NAS Interplex 0.1
″
R1 Not used 603
R2 1 Std Resistor, chip, 0
Ω
, 1/16W, 5% 603
R3 1 Std Resistor, chip, 19.1 k
Ω
, 1/16W, 1% 603
R4 Not used 603
R5 1 Std Resistor, chip, 1.3 k
Ω
, 1/16W, 5% 603
R6 1 Std Resistor, chip, 130 k
Ω
, 1/16W, 1% 603
U1 1 TPS76901DBV IC, LDO TI SOT23-5
U2 1 TL431CPK IC, shunt regulator, 2.5 V, 2% TI SOT-89A
— 1 SLVP127 PCB, 2 layer, 1 oz, 0.55
″ ×
0.37
″ ×
0.040
″
(Finished)
Figure 3–1. Load Regulation
–4
–2
0
2
4
0 20 40 60 80 100
VAVG = 1.036
IO – Output Current – mA
120
V
O
– Change in
∆
Output
V
oltage – mV
LOAD REGULATION