2 A/3 A, 20 V, 700 kHz, Nonsynchronous Step-Down Regulators ADP2302/ADP2303
FEATURES
Wide input voltage range: 3.0 V to ...
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
VIN VIN BST
TYPICAL APPLICATIONS CIRCUIT
ADP2302/ ADP2303
PGOOD SW
VOUT
ON OFF EN GND FB
08833-001
Figure 1. Typical Application Circuit
100
90
EFFICIENCY (%)
80
70
APPLICATIONS
Intermediate power rail conversion DC-to-DC point of load applications Communications and networking Industrial and instrumentation Healthcare and medical Consumer
60
50
VOUT = 3.3V INDUCTOR: VLF10040T -4R7N5R4 DIODE: SSB43L VOUT = 5.0V
40
OUTPUT CURRENT (A)
Figure 2. ADP2303 Efficiency vs. Output Current at VIN = 12 V
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 out...
