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ADP2302

Analog Devices
Part Number ADP2302
Manufacturer Analog Devices
Description (ADP2302 / ADP2303) Nonsynchronous Step-Down Regulators
Published Apr 22, 2014
Detailed Description Data Sheet 2 A/3 A, 20 V, 700 kHz, Nonsynchronous Step-Down Regulators ADP2302/ADP2303 FEATURES Wide input voltage ran...
Datasheet PDF File ADP2302 PDF File

ADP2302
ADP2302

Overview
Data Sheet 2 A/3 A, 20 V, 700 kHz, Nonsynchronous Step-Down Regulators ADP2302/ADP2303 FEATURES Wide input voltage range: 3.
0 V to 20 V Maximum load current 2 A for ADP2302 3 A for ADP2303 ±1.
5% output accuracy over temperature Output voltage down to 0.
8 V 700 kHz switching frequency Current-mode control architecture Automatic PFM/PWM mode Precision enable pin with hysteresis Integrated high-side MOSFET Integrated bootstrap diode Internal compensation and soft start Power-good output Undervoltage lockout (UVLO) Overcurrent protection (OCP) Thermal shutdown (TSD) 8-lead SOIC package with exposed paddle Supported by ADIsimPowerâ„¢ design tool APPLICATIONS Intermediate power rail conversion DC-to-DC point of load applications Communications and networking Industrial and instrumentation Healthcare and medical Consumer GENERAL DESCRIPTION The ADP2302/ADP2303 are fixed frequency, current-mode control, step-down, dc-to-dc regulators with an integrated power MOSFET.
The ADP2302/ADP2303 can run from an input voltage of 3.
0 V to 20 V, which makes them suitable for a wide range of applications.
The output voltage of the ADP2302/ ADP2303 can be down to 0.
8 V for the adjustable version, while the fixed output version is available in preset output voltage options of 5.
0 V, 3.
3 V, and 2.
5 V.
The 700 kHz operating frequency allows small inductor and ceramic capacitors to be used, providing a compact solution.
Current mode control provides fast and stable line and load transient performance.
TYPICAL APPLICATIONS CIRCUIT VIN VIN BST ADP2302/ ADP2303 PGOOD SW VOUT ON OFF EN GND FB Figure 1.
Typical Application Circuit 08833-001 EFFICIENCY (%) 100 90 80 70 60 50 INDUCTOR: VLF10040T-4R7N5R4 DIODE: SSB43L 40 0 0.
5 1.
0 1.
5 2.
0 OUTPUT CURRENT (A) VOUT = 3.
3V VOUT = 5.
0V 2.
5 3.
0 Figure 2.
ADP2303 Efficiency vs.
Output Current at VIN = 12 V 08833-002 The ADP2302/ADP2303 have integrated soft start circuitry to prevent a large inrush current at power-up.
The power-goo...


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