Datasheet ADP2230 (Analog Devices) - 4
| Hersteller | Analog Devices |
| Beschreibung | Dual 2 MHz, 800 mA, Synchronous, Low Quiescent Current Buck Regulator |
| Seiten / Seite | 18 / 4 — ADP2230. Data Sheet. Parameter. Symbol. Test Conditions/Comments. Min. … |
| Revision | A |
| Dateiformat / Größe | PDF / 737 Kb |
| Dokumentensprache | Englisch |
ADP2230. Data Sheet. Parameter. Symbol. Test Conditions/Comments. Min. Typ. Max. Unit. RECOMMENDED COMPONENT SPECIFICATIONS
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ADP2230 Data Sheet Parameter Symbol Test Conditions/Comments Min Typ Max Unit
ENABLE STANDBY LOGIC LEVELS 2.3 V ≤ VIN ≤ 6.5 V High 1.15 V Low 0.4 V Hysteresis 200 mV ENABLE PRECISION LOGIC LEVELS 2.3 V ≤ VIN ≤ 6.5 V Operating Maximum EN1 VEN1 5.5 V EN2 VEN2 6.5 V High ENx pin rising 1.2 1.255 V Low ENx pin falling 1 1.1 V ENx Pin Leakage Current VENx = VIN or GND 0.01 1 µA THERMAL SHUTDOWN Threshold TJ rising 150 °C Hysteresis 15 °C 1 The fixed VOUT feedback pin current is the internal feedback voltage, 0.8 V (typical), divided by the bottom feedback resistor, typically 400 kΩ.
RECOMMENDED COMPONENT SPECIFICATIONS
TA = −40°C to +125°C
Table 2. Parameter Symbol Min1 Typ Max Unit
INPUT AND OUTPUT CAPACITANCE2 CIN, COUT 7 10 µF Capacitor Equivalent Series Resistance (ESR) ESRCIN, ESRCOUT 0.001 0.01 Ω INDUCTANCE L 1.5 2.2 μH 1 Minimum values represent the minimum effective values of the components under the application operating conditions. To achieve the minimum effective values, components specified as 2.2 µH inductors and 10 µF capacitors are recommended. 2 Ensure that the minimum input and output capacitance is greater than 7 μF over the full range of operating conditions. The ful range of operating conditions in the application must be considered during device selection to ensure that the minimum capacitance specification is met. X7R and X5R type capacitors are recommended; Y5V and Z5U capacitors are not recommended. Rev. A | Page 4 of 18 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS RECOMMENDED COMPONENT SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION OVERVIEW OPERATING CONDITIONS Input Voltage Output Voltage SYNC PIN CONTROL SCHEMES PWM Mode PSM/PWM Automatic Transitioning Mode External Clock Synchronization FEATURES DESCRIPTIONS Precision Enable Quick Output Discharge Output Short-Circuit Protection Undervoltage Lockout Thermal Shutdown Soft Start Current Limit 100% Duty Cycle APPLICATIONS INFORMATION SETTING THE OUTPUT VOLTAGE SELECTING THE INDUCTOR SELECTING THE INPUT AND OUTPUT CAPACITORS Input Capacitor Output Capacitor PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE
ENABLE STANDBY LOGIC LEVELS 2.3 V ≤ VIN ≤ 6.5 V High 1.15 V Low 0.4 V Hysteresis 200 mV ENABLE PRECISION LOGIC LEVELS 2.3 V ≤ VIN ≤ 6.5 V Operating Maximum EN1 VEN1 5.5 V EN2 VEN2 6.5 V High ENx pin rising 1.2 1.255 V Low ENx pin falling 1 1.1 V ENx Pin Leakage Current VENx = VIN or GND 0.01 1 µA THERMAL SHUTDOWN Threshold TJ rising 150 °C Hysteresis 15 °C 1 The fixed VOUT feedback pin current is the internal feedback voltage, 0.8 V (typical), divided by the bottom feedback resistor, typically 400 kΩ.
RECOMMENDED COMPONENT SPECIFICATIONS
TA = −40°C to +125°C
Table 2. Parameter Symbol Min1 Typ Max Unit
INPUT AND OUTPUT CAPACITANCE2 CIN, COUT 7 10 µF Capacitor Equivalent Series Resistance (ESR) ESRCIN, ESRCOUT 0.001 0.01 Ω INDUCTANCE L 1.5 2.2 μH 1 Minimum values represent the minimum effective values of the components under the application operating conditions. To achieve the minimum effective values, components specified as 2.2 µH inductors and 10 µF capacitors are recommended. 2 Ensure that the minimum input and output capacitance is greater than 7 μF over the full range of operating conditions. The ful range of operating conditions in the application must be considered during device selection to ensure that the minimum capacitance specification is met. X7R and X5R type capacitors are recommended; Y5V and Z5U capacitors are not recommended. Rev. A | Page 4 of 18 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS RECOMMENDED COMPONENT SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION OVERVIEW OPERATING CONDITIONS Input Voltage Output Voltage SYNC PIN CONTROL SCHEMES PWM Mode PSM/PWM Automatic Transitioning Mode External Clock Synchronization FEATURES DESCRIPTIONS Precision Enable Quick Output Discharge Output Short-Circuit Protection Undervoltage Lockout Thermal Shutdown Soft Start Current Limit 100% Duty Cycle APPLICATIONS INFORMATION SETTING THE OUTPUT VOLTAGE SELECTING THE INDUCTOR SELECTING THE INPUT AND OUTPUT CAPACITORS Input Capacitor Output Capacitor PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE