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AP2114H — 1 A Low-Noise CMOS LDO Regulator with Enable

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by Kyle Bergstedt

Diodes AP2114. 1 A CMOS LDO with enable, ±1.5 % accuracy, 450 mV dropout @ 1 A, 30 µVrms noise, 60 µA Iq. 1.2/1.5/1.8/2.5/3.3 V fixed + adjustable. SOT-223 through PSOP-8.

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Source: BCD Semiconductor / Diodes Incorporated AP2114 Datasheet
Manufacturer: Diodes Incorporated (BCD Semiconductor)
Part Number: AP2114
Document: Rev 2.2, January 2013 (1 A Low Noise CMOS LDO Regulator with Enable)

Description

The AP2114 is a CMOS process low-dropout linear regulator with enable function. The regulator delivers a guaranteed 1 A (min) continuous load current. The AP2114 is available in 1.2 V, 1.5 V, 1.8 V, 2.5 V and 3.3 V regulator output and 0.8 V to 5 V adjustable output. It features excellent output accuracy of ±1.5 %, and it is also available in an excellent load regulation and line regulation performance.

The AP2114 features low power consumption.

Packages: SOT-223, TO-252-2(1) / (3) / (4), TO-263-3, SOIC-8, PSOP-8.

Key Specifications

Parameter Value
Output Voltage Accuracy ±1.5 %
Output Current 1 A (min)
Foldback Short Circuit Protection 50 mA
Low Dropout Voltage (3.3 V) 450 mV typ @ IOUT = 1 A
Excellent Line Regulation 0.02 %/V typ, 0.1 %/V max @ IOUT = 30 mA
Excellent Load Regulation 0.25 %/A typ @ IOUT = 1 mA to 1 A
Low Quiescent Current 60 µA (1.2 V/1.5 V/1.8 V/2.5 V/ADJ) typ
Low Output Noise 30 µVRMS
PSRR 68 dB @ 1 kHz (IOUT = 100 mA)
OTSD Protection Yes
Operating Temperature Range −40 °C to +85 °C
ESD MM 400 V, HBM 4000 V
Stability 4.7 µF flexible cap: ceramic, tantalum, aluminum electrolytic

Features

  • Output voltage accuracy ±1.5 %
  • Output current 1 A (min)
  • Foldback short-circuit protection 50 mA
  • Low dropout voltage 450 mV (typ) @ IOUT = 1 A for 3.3 V version
  • Stable with 4.7 µF flexible cap: ceramic, tantalum, aluminum electrolytic
  • Excellent line regulation 0.02 % (typ), 0.1 % (max) @ IOUT = 30 mA
  • Excellent load regulation 0.25 % (typ) @ IOUT = 1 mA to 1 A
  • Low quiescent current 60 µA (1.2 V/1.5 V/1.8 V/2.5 V/ADJ)
  • Low output noise 30 µVRMS
  • PSRR 68 dB @ freq = 1 kHz (1.2 V/1.5 V/1.8 V/ADJ)
  • OTSD protection
  • Operating temperature range −40 °C to +85 °C
  • ESD: MM 400 V, HBM 4000 V

Applications

  • LCD monitor
  • LCD TV
  • Set-top box (STB)

Pin Configuration

Multiple packages available. Top-view mapping:

Package Pin 1 Pin 2 Pin 3 Pin 4 (if 4+) Notes
H/HA (SOT-223) GND VOUT (2), VOUT tab VIN — HA variant swaps order
S (TO-263-3) GND VOUT VIN — Tab = VOUT
D/DA (TO-252-2) GND VOUT VIN — Multiple pin-orientation variants (1)/(3)/(4)
M (SOIC-8, Fixed) GND VOUT GND VIN EN on pin 8; pins 5-7 are additional GND
M (SOIC-8, Adjustable) VOUT GND ADJ VIN EN on pin 8; pin 6 = ADJ
MP (PSOP-8, Fixed) GND VOUT GND VIN Same as SOIC-8 layout
MP (PSOP-8, Adjustable) VOUT GND ADJ VIN Same as SOIC-8 adjustable layout

EN (pin 8 on SOIC/PSOP): Chip Enable. H = normal work, L = shutdown output.

Absolute Maximum Ratings

Parameter Symbol Value Unit
Power Supply Voltage VIN 6.5 V
Operating Junction Temperature TJ 150 °C
Storage Temperature Range TSTG −65 to 150 °C
Lead Temperature (Soldering, 10 s) TLEAD 260 °C
θJA (SOIC-8) — 144 °C/W
θJA (PSOP-8) — 43.7 °C/W
θJA (SOT-223) — 55.9 °C/W
θJA (TO-252-2 (1)(3)(4)) — 35 °C/W
θJA (TO-263-3) — 22 °C/W
ESD (Machine Model) — 400 V
ESD (Human Body Model) — 4000 V

Recommended Operating Conditions

Parameter Symbol Min Max Unit
Supply Voltage VIN 2.5 6.0 V
Operating Ambient Temperature Range TA −40 +85 °C

Electrical Characteristics

AP2114-1.2 electrical characteristics: VIN = 2.5 V, CIN = 4.7 µF (ceramic), COUT = 4.7 µF (ceramic), TA = 25 °C typical. Bold applies over −40 to +85 °C unless otherwise specified.

Parameter Symbol Conditions Min Typ Max Unit
Output Voltage VOUT VIN = 2.5 V, 1 mA ≤ IOUT ≤ 30 mA VOUT·98.5 % 1.2 VOUT·101.5 % V
Input Voltage VIN 6.0 V
Maximum Output Current IOUT(MAX) VIN = 2.5 V, VOUT ≥ 1.182 V to 1.218 V 1 A
Load Regulation ΔVOUT/VOUT/ΔIOUT VIN = 2.5 V, 1 mA ≤ IOUT ≤ 1 A 0.2 1 %/A
Line Regulation ΔVOUT/VOUT/VIN 2.5 V ≤ VIN ≤ 6 V, IOUT = 30 mA −0.1 0.02 0.1 %/V
Dropout Voltage VDROP IOUT = 1 A 1200 1300 mV
Quiescent Current IQ VIN = 2.5 V, IOUT = 0 mA 60 75 µA
PSRR — Ripple 1 Vp-p, VIN = 2.5 V, IOUT = 100 mA, f = 100 Hz 68 dB
PSRR — f = 1 kHz 68 dB
Output Voltage Temperature Coefficient ΔVOUT/VOUT/ΔT IOUT = 30 mA, TA = −40 °C to 85 °C ±30 ppm/°C
Short Current Limit ISHORT VOUT = 0 V 50 mA
Standby Current ISTD VIN = 2.5 V, VEN in OFF mode 0.01 1.0 µA
RMS Output Noise VNOISE 10 Hz ≤ f ≤ 100 kHz (No Load) 30 µVRMS
VEN High Voltage VIH Enable logic high, regulator on 1.5 V
VEN Low Voltage VIL Enable logic low, regulator off 0.4 V
Start-up Time tS No load 20 µs
EN Pull-Down Resistor RPD 3.0 MΩ
VOUT Discharge Resistor RDCHG Set EN pin at Low 60 Ω
Thermal Shutdown Temperature TOTSD 160 °C
Thermal Shutdown Hysteresis THYSTSD 25 °C

Packages

Available as:

  • SOT-223 (H/HA)
  • TO-263-3 (S)
  • TO-252-2 (D, DA, various pin orientations (1), (3), (4))
  • SOIC-8 (M)
  • PSOP-8 (MP)

Output voltages: 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, and adjustable (0.8 V – 5.0 V).

Applications

  • LCD monitor
  • LCD TV
  • Set-top box (STB)

Usage notes

  • Input and output require ceramic, tantalum, or aluminum electrolytic capacitors; 4.7 µF is a flexible default.
  • The EN pin has a 3 MΩ internal pull-down, so it defaults OFF if left floating.
  • At shutdown (EN low), VOUT is actively pulled down through a 60 Ω discharge resistor.
  • To prevent short-circuit protection from being prematurely activated, the input voltage must be applied before a current-source load is applied.