MAX1818EUT15#TG16 Maxim Integrated Products, MAX1818EUT15#TG16 Datasheet - Page 8

• Manufacturer Part Number: MAX1818EUT15#TG16
• Description: IC REG LDO 1.5/ADJ 500MA SOT23-6
• Manufacturer: Maxim Integrated Products

Specifications of MAX1818EUT15#TG16

• Regulator Topology: Positive Fixed or Adjustable
• Voltage - Output: 1.5V, 1.25 ~ 5 V
• Voltage - Input: 2.5 ~ 5.5 V
• Number Of Regulators: 1
• Current - Output: 500mA (Min)
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Dropout (typical): -
• Current - Limit (min): -

Capacitors are required at the MAX1818’s input and
output for stable operation over the full temperature
range and with load currents up to 500mA. Connect a
1µF capacitor between IN and ground and a 3.3µF low-
ESR capacitor between OUT and ground. For output
voltages less than 2V, use a 4.7µF low-ESR output
capacitor. The input capacitor (C
impedance of the input supply. Reduce noise and
improve load-transient response, stability, and power-
supply rejection by using larger output capacitors, such
as 10µF.
The output capacitor’s (C
tance (ESR) affects stability and output noise. Use out-
put capacitors with an ESR of 0.1Ω or less to ensure
stability and optimum transient response. Surface-
mount ceramic capacitors have very low ESR and are
commonly available in values up to 10µF. Connect C
and C
mize the impact of PC board trace inductance.
The MAX1818 is designed to operate with low dropout
voltages and low quiescent currents in battery-powered
systems while still maintaining good noise, transient
response, and AC rejection. See the T ypical Operating
Characteristics for a plot of power-supply rejection ratio
(PSRR) versus frequency. When operating from noisy
sources, improved supply-noise rejection and transient
response can be achieved by increasing the values of
the input and output bypass capacitors and through
passive filtering techniques.
500mA Low-Dropout
Linear Regulator in SOT23
8
MAX1818EUT15
MAX1818EUT18
MAX1818EUT20
MAX1818EUT25
MAX1818EUT33
MAX1818EUT50
_______________________________________________________________________________________
PART AND
SUFFIX
OUT
Noise, PSRR, and Transient Response
as close to the MAX1818 as possible to mini-
Applications Information
1.5V or Adj
1.8V or Adj
2.0V or Adj
2.5V or Adj
3.3V or Adj
5.0V or Adj
V
OUT
Capacitor Selection and
OUT
) equivalent series resis-
Regulator Stability
Selector Guide
SOT23
MARK
AANG
AASO
AANU
AANH
AANV
AANF
TOP
IN
) lowers the source
COMPLIANT)
TOP MARK
SOT23
(RoHS
ABZM
ABZG
ABZK
ABZH
ABZL
ABZJ
IN
The MAX1818 load-transient response (see T ypical
Operating Characteristics ) shows two components of
the output response: a DC shift from the output imped-
ance due to the load current change, and the transient
response. A typical transient response for a step
change in the load current from 100mA to 500mA is
8mV. Increasing the output capacitor’s value and
decreasing the ESR attenuates the overshoot.
A regulator’s minimum input-to-output voltage differen-
tial (dropout voltage) determines the lowest usable sup-
ply voltage. In battery-powered systems, this
determines the useful end-of-life battery voltage.
Because the MAX1818 uses a P-channel MOSFET pass
transistor, its dropout voltage is a function of drain-to-
source on-resistance (R
current (see Typical Operating Characteristics ).
The MAX1818 ground current remains below 150µA in
dropout.
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages.
TRANSISTOR COUNT: 845
PACKAGE TYPE
6 SOT23#
6 SOT23
V
DROPOUT
Input-Output (Dropout) Voltage
= V
PACKAGE CODE
IN
Package Information
- V
U6FH-6
DS(ON)
U6F-6
OUT
Chip Information
) multiplied by the load
= R
DS(ON)
DOCUMENT NO.
× I
21-0058
21-0058
OUT