MAX1935ETA15+T Maxim Integrated Products, MAX1935ETA15+T Datasheet - Page 6

• Manufacturer Part Number: MAX1935ETA15+T
• Description: IC REG LINEAR 500MA 8-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX1935ETA15+T

• Regulator Topology: Positive Fixed
• Voltage - Output: 1.5V
• Voltage - Input: 2.25 ~ 5.5 V
• Number Of Regulators: 1
• Current - Output: 500mA (Min)
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-TDFN Exposed Pad
• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 5.5 V
• Output Voltage: 1.5 V
• Output Type: Fixed
• Output Current: 500 mA
• Line Regulation: 0 % / V
• Voltage Regulation Accuracy: 2.5 %
• Maximum Power Dissipation: 1.95 W
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Reference Voltage: 0.8 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Dropout (typical): -
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

500mA, Low-Voltage Linear Regulator
in Tiny QFN
(V
6
OUT
_______________________________________________________________________________________
PIN
1, 2
7, 8
3
4
5
6
= 3.3V, V
NAME
SHDN
GND
POK
OUT
SET
IN
IN
= V
OUT
Regulator Input. Supply voltage can range from 2.25V to 5.5V. Bypass with a 1µF capacitor to GND (see
the Capacitor Selection and Regulation Stability section). Connect both input pins together externally.
Open-Drain, Active-Low Power-OK Output. POK remains low while the output voltage (V
POK threshold. Connect a 100kΩ pullup resistor from POK to OUT.
Active-Low Shutdown Input. A logic low at SHDN reduces supply current to 0.02µA. In shutdown, the POK
output is low. Connect SHDN to IN for normal operation.
Ground. This pin and the exposed pad also function as a heatsink. Solder both to a large pad or to the
circuit-board ground plane to maximize power dissipation.
Voltage-Setting Input. Connect SET to GND for preset output. Connect an external resistive voltage-divider
from OUT to SET to set the output voltage between 0.8V and 4.5V. The SET regulation voltage is 800mV.
Regulator Output. OUT sources up to 500mA. Bypass OUT with a 10µF low-ESR capacitor to GND.
Connect both OUT pins together externally.
+ 500mV, SHDN = IN, C
R
OUT
LOAD-TRANSIENT RESPONSE
= 6.6Ω (500mA)
SHUTDOWN WAVEFORM
NEAR DROPOUT
10µs/div
20µs/div
V
C
R
6.6Ω (5mA TO 500mA)
IN
OUT
IN
= V
= 10µF
= 660Ω TO
OUT
Typical Operating Characteristics (continued)
IN
+ 100mV
MAX1935 toc14
MAX1935 toc16
= 1µF, C
I
200mA/div
V
50mV/div
2V
V
1V/div
0
3V
V
1V/div
0
OUT
OUT
SHDN
OUT
OUT
= 10µF, T
FUNCTION
A
= +25°C, unless otherwise noted.)
R
OUT
= 66Ω (50mA)
LINE-TRANSIENT RESPONSE
POK WAVEFORM
200µs/div
200µs/div
MAX1935 toc17
MAX1935 toc15
Pin Description
5V
V
2V/div
0
V
2V/div
0
V
2V/div
0
6V
V
1V/div
3V
V
10mV/div
OUT
IN
OUT
POK
IN
OUT
) is below the