MAX15029_12 Datasheet, PDF (6/11 Pages) Maxim Integrated Products – 1.425V to 3.6V Input, 500mA Low-Dropout Regulators with BIAS Input

1.425V to 3.6V Input, 500mA Low-Dropout
Regulators with BIAS Input
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V_IN = 1.8V, V_OUT = 1.5V, I_OUT = 500mA, T_A = +25°C, unless otherwise noted.)
TURN-ON WITH ENABLE RESPONSE
MAX15029 toc15
1V/div
V_OUT
0
2V/div
TURN-OFF WITH ENABLE RESPONSE
MAX15029 toc16
V_OUT
1V/div
0
V_EN
2V/div
V_EN
0
I_OUT = 500mA
2ms/div
0
I_OUT = 500mA
4μs/div
Pin Description
PIN
MAX15029
8-PIN 10-PIN
1, 2
1, 2, 3
—
—
3
4
4
5
5
6
6
7
7
8
8
9, 10
—
—
MAX15030
1, 2
3
4
5
6
7
8
9, 10
—
NAME
FUNCTION
IN
BIAS
I.C.
EN
SS
FB
GND
OUT
EP
Regulator Input. 1.425V to 3.6V voltage range. Bypass to GND with at least 1μF
of ceramic capacitance. IN is high impedance when the LDO is shut down.
Internal Circuitry Supply Input. BIAS supplies the power for the internal circuitry.
3V to 5.5V voltage range.
Internally Connected. Connect I.C. directly to GND.
LDO Enable. Drive EN high to enable the LDO or connect to IN (BIAS for
MAX15030) for always-on operation. Drive EN low to disable the LDO and place
the IC in low-power shutdown mode.
Soft-Start Input. For typical operation, connect a 0.1μF capacitor from SS to GND.
The soft-start timing is dependent on the value of this capacitor. See the Soft-
Start section.
Feedback Input. Connect FB to the center of a resistor-divider connected
between OUT and GND to set the output voltage. See the Programming the
Output Voltage section.
Ground
Regulator Output. Bypass OUT to GND with at least 2.2μF of ceramic
capacitance for 500mA load operation.
Exposed Pad. Connect EP to GND and a large copper ground plane to facilitate
package power dissipation.
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