MAX1659ESA+T Maxim Integrated Products, MAX1659ESA+T Datasheet - Page 9

• Manufacturer Part Number: MAX1659ESA+T
• Description: IC LDO REG 350MA 16.5VIN 8-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of MAX1659ESA+T

• Regulator Topology: Positive Fixed or Adjustable
• Voltage - Output: 5V, 1.25 ~ 16 V
• Voltage - Input: 2.7 ~ 16.5 V
• Voltage - Dropout (typical): 0.49V @ 350mA
• Number Of Regulators: 1
• Current - Output: 350mA (Min)
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 16.5 V
• Output Voltage: 1.25 V to 16 V, 5 V
• Output Type: Adjustable, Fixed
• Dropout Voltage (max): 0.875 V at 350 mA
• Output Current: 350 mA
• Line Regulation: 0.05 % / V
• Load Regulation: 0.003 % / mA
• Voltage Regulation Accuracy: 3 %
• Maximum Power Dissipation: 1.2 W
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Reference Voltage: 1.246 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

To maintain stability, connect a ≥10µF capacitor with
less than 200mΩ equivalent series resistance (ESR)
from OUT to GND. Larger output capacitors improve
load-transient response. Currents lower than 350mA
make the use of smaller output capacitors possible.
Table 1 shows the maximum output current typically
achieved using various output capacitors. Output volt-
ages higher than 3.3V require less output capacitance
to remain stable.
Table 1. Typical Load Current Capabilities
__________Applications Information
Output Capacitor Selection and Stability
OUTPUT CAPACITOR
2.2µF tantalum
4.7µF tantalum
10µF tantalum
_______________________________________________________________________________________
LOAD CURRENT RANGE
0mA to 120mA
0mA to 250mA
0mA to 350mA
Low-Dropout Linear Regulators
The use of a 0.1µF to 10µF input bypass capacitor is
recommended. Larger capacitors provide better sup-
ply-noise rejection and line-transient response, as well
as improved performance when the supply has a high
AC impedance. Polarized input bypass capacitors will
be damaged under reverse battery conditions. If
reverse input voltages are expected, use a non-polar-
ized capacitor at the input.
The MAX1658/MAX1659 exhibit 2.5mVp-p of noise dur-
ing normal operation. This noise level is negligible in
most applications.
The MAX1658/MAX1659 are designed to maintain
excellent power-supply rejection (55dB) at 50Hz/60Hz
(or 50dB at 120Hz). These regulators are ideal for wall-
cube applications that may contain significant ripple.
Larger input and output capacitors will further improve
the circuit’s AC response. See the Power-Supply
Rejection Ratio vs. Frequency graphs in the Typical
Operating Characteristics.
TRANSISTOR COUNT: 207
___________________Chip Information
350mA, 16.5V Input,
Input Bypass Capacitor
Noise and PSRR
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