Document
YB1230
600mA, Low-Noise LDO Regulator
Description
Features
2.0% Accuracy Output Voltage Output Voltage Range 1.8V ~ 3.1V Low-Noise Low-Drop-Out Stable with 2.2μF Ceramic Capacitor for Any Load Typical Output Current : 600mA Low Quiescent Current : ~90μA 500mV Dropout at 600mA Load (3.1V) Only Need Input and Output Capacitors Power Saving Shutdown Mode (<1μA) Thermal Protection Shutdown
The YB1230 is a series of low-noise, low dropout (LDO) linear regulators with 2.0% output voltage accuracy. The YB1230 regulators achieve a low 500mV dropout at 600mA load current of 3.1V output and are available in voltages ranging from 1.8V to 3.1 V with 0.1 V per step (custom voltage is considerable at request). The YB1230 regulators are optimized to work with low-ESR and low cost ceramic capacitors, reducing the amount of board space critical in hand-held devices. The YB1230 requires only 2.2μF output capacitor for stability with any load and consumes less than 1μA in shutdown mode. Built-in thermal shutdown and short-circuit protect offer secure protection against fault operation. The YB1230 regulators are available in SOT-23 / SOT-25 / SOT-89 packages.
Built-In Internal Soft-Start Output Short-Circuit Current Limit Protection Green package (RoHS) available
Applications
PDA, Palmtops and Notebook Computers DSC, Handset Camera Modules PCMCIA Cards, PC Cameras USB Based Portable Devices (MP3, PMP) GSM/GPRS/3G RF Transceiver Modules Wireless LANs Bluetooth Portable Radios
Typical Application Circuit
Figure 1-1: SOT-25 Application Circuit
Figure 1-2: SOT-23/SOT-89 Application Circuit
YB1230 Rev.1.6
www.yobon.com.tw
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YB1230
600mA, Low-Noise LDO Regulator
Pin Configuration
Figure 2: Pin Configuration
Pin Description
Table 1
Name
VIN GND EN VOUT
Description
Unregulated input supply. Bypass with a capacitor to GND. Ground pin. Pull high to enable the regulator. Regulated output voltage. Bypass with a capacitor to GND.
YB1230 Rev.1.6
www.yobon.com.tw
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YB1230
600mA, Low-Noise LDO Regulator
Ordering Information
Marking Information
Absolute Maximum Ratings (Note 1)
Supply Voltage............................ -0.3V to 6V Output Voltage ................ -0.3V to (VIN+0.3V) Output Short-Circuit Duration..............Infinite Junction Temperature Range............ +150℃ Storage Temperature Range...... -65℃ to +150℃ Lead Temperature............................. +250℃
Recommended Operating Conditions
(Note 2)
Input Supply Voltage............... 2.0V to 5.5V Operating Temperature........-40℃ to +85℃
Thermal In formation
(Note 3)
Thermal Resistance (SOT-23/25, θJA) ... 280℃/W Thermal Resistance (SOT-89, θJA)......... 180℃/W Internal Power Dissipation (SOT-23/25, PD) . 0.4W Internal Power Dissipation (SOT-89, PD)..... 0.55W
Note: 1. Exceeding these ratings may damage the device. 2. The device is not guaranteed to function outside of its operating conditions. 3. θJA is measured in free air at TA = 25℃ on a low effective thermal conductivity board.
YB1230 Rev.1.6
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YB1230
600mA, Low-Noise LDO Regulator
Electrical Characteristics
Table 2 VIN = ( VOUT + 1V ), CIN = COUT = 2.2μF, VEN = VIN, TA=25°C, unless otherwise noted. Description Input Voltage Range Output Voltage Output Voltage Accuracy Output Current Limit Symbol VIN VOUT ΔVOUT ISC Predefined IOUT = 10mA Short-Circuit Output VOUT = 3.2V, IOUT = 600mA VOUT = 3.0V, IOUT = 600mA Dropout Voltage (Note 1) VDROP VOUT = 2.5V, IOUT = 600mA VOUT = 2.0V, IOUT = 600mA VOUT = 1.8V, IOUT = 600mA Ground Current Line Regulation Load Regulation Shutdown Supply Current Ripple Rejection (PSRR) Shutdown Exit Delay (Note 2) EN Logic Low Level EN Logic High Level EN Input Bias Current Thermal Shutdown Thermal Hysteresis VIL VIH IBEN TSD THYS IG ΔVLINE ΔVLOAD ISD PSRR Iground = IIN - IOUT VIN=(VOUT+1V) to 5.5V, IOUT=10mA IOUT = 1mA to 600mA EN = 0V f = 100Hz, IOUT = 10mA f = 1KHz, IOUT = 10mA f = 10KHz, IOUT = 10mA VOUT = 2.8V, Rload = 9 ohm VIN = 2.0V to 5.5V VIN = 2.0V to 5.5V VIN = EN = VOUT +1V Shutdown Temperature VOUT = 1.8V, IOUT = 100mA 1.5 0.01 160 20 56 56 45 40 100 0.4 VIN μs V V μA °C °C dB Test Conditions MIN 2.0 1.8 -2.0 380 500 520 600 750 850 90 0.3 2 1 150 μA %/V % μA mV TYP MAX 5.5 3.1 +2.0 Units V V % mA
Note : 1. The drop out voltage varies depending on output voltage selection. Dropout is defined as VIN – VOUT when VOUT is 100mV below nominal VOUT where VIN = VOUT + 1V for nominal VOUT. 2. Time needed for VOUT to reach 90% of final value.
YB1230 Rev.1.6
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YB1230
600mA, Low-Noise LDO Regulator
Typical Performance Characteristics
VIN = ( VOUT + 1V ), CIN = COUT = 2.2μF, VEN = VIN, TA=25°C, unless otherwise noted.
Dropout Voltage vs. Output Voltage
Dropout Voltage vs. Load Current
Ground Current vs. Input Voltage
Dropout Voltage vs. Temperature
Load Transient Response (1)
Load Transient Response (2)
YB1230 Rev.1.6
www.yobon.com.tw
5
YB1230
600mA, Low-Noise LDO Reg.