Datasheet

TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at I
O
= 10 mA, EN = 0 V, C
O
= 4.7 µF/CSR
†
= 1 Ω, T
J
= 25°C, SENSE/FB
shorted to OUT (unless otherwise noted)
PARAMETER
TEST CONDITIONS
‡
TPS7101Y, TPS7133Y
TPS7148Y, TPS7150Y
UNIT
MIN TYP MAX
Ground current (active mode)
EN ≤ 0.5 V,
0 mA ≤ I
O
≤ 500 mA
V
I
= V
O
+ 1 V,
285 µA
Output current limit V
O
= 0, V
I
= 10 V 1.2 A
PG leakage current
Normal operation, V
PG
= 10 V 0.02 µA
Thermal shutdown junction temperature 165 °C
EN hysteresis voltage 50 mV
Minimum V
I
for active pass element 2.05 V
Minimum V
I
for valid PG I
PG
= 300 µA 1.06 V
PARAMETER
TEST CONDITIONS
‡
TPS7101Y
UNIT
PARAMETER
TEST
CONDITIONS
‡
MIN TYP MAX
UNIT
Reference voltage (measured at FB with OUT
connected to FB)
V
I
= 3.5 V, I
O
= 10 mA 1.178 V
V
I
= 2.4 V, 50 µA ≤ I
O
≤ 150 mA 0.7
V
I
= 2.4 V, 150 mA ≤ I
O
≤ 500 mA 0.83
Pass-element series resistance (see Note 2)
V
I
= 2.9 V, 50 µA ≤ I
O
≤ 500 mA 0.52
Ω
V
I
= 3.9 V, 50 µA ≤ I
O
≤ 500 mA 0.32
V
I
= 5.9 V, 50 µA ≤ I
O
≤ 500 mA 0.23
Input regulation
V
I
= 2.5 V to 10 V,
See Note 1
50 µA ≤ I
O
≤ 500 mA,
18 mV
Out
p
ut regulation
2.5 V ≤ V
I
≤ 10 V,
See Note 1
I
O
= 5 mA to 500 mA,
14 mV
Output
regulation
2.5 V ≤ V
I
≤ 10 V,
See Note 1
I
O
= 50 µA to 500 mA,
22 mV
Ripple rejection
V
I
= 3.5 V,
I
O
= 50 µA
f = 120 Hz,
59 dB
Output noise-spectral density V
I
= 3.5 V, f = 120 Hz 2
µV/√Hz
V
I
=
3.5 V,
C
O
= 4.7 µF 95
Output noise voltage
V
I
=
3
.
5
V
,
10 Hz ≤ f ≤ 100 kHz,
†
C
O
= 10 µF 89
µVrms
CSR
†
= 1 Ω
C
O
= 100 µF 74
PG hysteresis voltage
§
V
I
= 3.5 V, Measured at V
FB
12 mV
PG output low voltage
§
V
I
= 2.13 V, I
PG
= 400 µA 0.1 V
FB input current
V
I
= 3.5 V V
I
= 3.5 V
0.1 nA
†
CSR refers to the total series resistance, including the ESR of the capacitor, any series resistance added externally, and PWB trace resistance
to C
O
.
‡
Pulse-testing techniques are used to maintain virtual junction temperature as close as possible to ambient temperature; thermal effects must
be taken into account separately.
§
Output voltage programmed to 2.5 V with closed-loop configuration (see application information).
NOTES: 1. When V
I
< 2.9 V and I
O
> 150 mA simultaneously, pass element r
DS(on)
increases (see Figure 27) to a point such that the resulting
dropout voltage prevents the regulator from maintaining the specified tolerance range.
2. To calculate dropout voltage, use equation:
V
DO
= I
O
⋅ r
DS(on)
r
DS(on)
is a function of both output current and input voltage. The parametric table lists r
DS(on)
for V
I
= 2.4 V, 2.9 V, 3.9 V, and
5.9 V, which corresponds to dropout conditions for programmed output voltages of 2.5 V, 3 V, 4 V, and 6 V, respectively. For other
programmed values, refer to Figure 26.