Datasheet

TPS7201Q, TPS7225Q, TPS7230Q
TPS7233Q, TPS7248Q, TPS7250Q, TPS72xxY
MICROPOWER LOW-DROPOUT (LDO) VOLTAGE REGULATORS
SLVS102G – MARCH 1995 – REVISED JUNE 2000
28
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
2→
1→
Ch 2
V
O
I
O
= 5 mA
Ch1 50 mV 50 mA 100 µs/div
V
I
= V
O
+ 1 V
I
O
= 85 mA
Figure 32. Load Transient Response (CSR total = 1.7 Ω), TPS7248Q
A partial listing of surface-mount capacitors usable with the TPS72xx family is provided below. This information
(along with the stability graphs, Figures 27 through 30) is included to assist the designer in selecting suitable
capacitors.
CAPACITOR SELECTION
PART NO. MFR. VALUE MAX ESR
†
SIZE (H × L × W)
†
592D156X0020R2T Sprague 15 µF, 20 V 1.1 1.2 × 7.2 × 6
595D156X0025C2T Sprague 15 µF, 25 V 1 2.5 × 7.1 × 3.2
595D106X0025C2T Sprague 10 µF, 25 V 1.2 2.5 × 7.1 × 3.2
695D106X0035G2T Sprague 10 µF, 35 V 1.3 2.5 × 7.6 × 2.5
†
Size is in mm. ESR is maximum resistance in ohms at 100 kHz and T
A
= 25°C. Listings are sorted by height.
sense-pin connection
SENSE must be connected to OUT for proper operation of the regulator. Normally this connection should be
as short as possible; however, remote sense may be implemented in critical applications when proper care of
the circuit path is exercised. SENSE internally connects to a high-impedance wide-bandwidth amplifier through
a resistor-divider network, and any noise pickup on the PCB trace will feed through to the regulator output.
SENSE must be routed to minimize noise pickup. Filtering SENSE using an RC network is not recommended
because of the possibility of inducing regulator instability.