Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
Control Mode
CURRENT-MODE
Frequency - Switching
170kHz~500kHz
Control Technique
PULSE WIDTH MODULATION
Switcher Configuration
PUSH-PULL
w/Sequencer
Yes
Voltage/Current - Output 1
Controller
Voltage/Current - Output 2
6V 30mA
w/LED Driver
No
Length
6.5mm
Width
4.4mm
RoHS Status
RoHS Compliant
NCV8851DBG Product Details
NCV8851DBG Description
The NCV8851DBG is an adjustable output, synchronous buck controller, which drives dual N?channel MOSFETs, ideal for high-power applications. Average current mode control is employed for very fast transient response and tight regulation over wide input voltage and output load ranges.
NCV8851DBG Features
Average Current Mode Control
0.8 V ±2% Reference Voltage
Input Voltage Range of 4.5 V to 20 V
6.0 V Low?dropout Linear Regulator (LDO)
Input UVLO (Undervoltage Lockout)
Internal Soft?start
1.0 A Maximum Quiescent Current in Sleep Mode
Adaptive Non?overlap Circuitry
150 ns Minimum High?side Gate Off?time
Programmable Fixed Frequency – 170 kHz to 500 kHz
External Clock Synchronization up to 600 kHz
Average Current Limiting (ACL)
Cycle?by?Cycle Overcurrent Protection (OCP)
Thermal Shutdown (TSD)
NCV8851DBG Applications
Automotive Systems Requiring High Current
Pre?regulated Supply for Low?voltage SMPSs and LDOs