ncp5203 ON Semiconductor, ncp5203 Datasheet
ncp5203
Available stocks
Related parts for ncp5203
ncp5203 Summary of contents
Page 1
... NCP5203 2−in−1 DDR Power Controller The NCP5203 2−in−1 DDR Power Controller is a complete power solution for an ACPI compliant high current DDR memory system. This IC combines the efficiency of a PWM controller for the VDDQ supply with the simplicity of linear regulator for the VTT termination voltage ...
Page 2
... PGOOD PGOOD SS CSS VTT VTT 1.25 V, 2.0 A Peak FBVTT COUT2 R3 REFSNS AGND R4 Figure 1. Typical Application Diagram NCP5203 CL1 RL1 OCDDQ BST 5VDUAL M1 TGDDQ NCP5203 SWDDQ M2 BGDDQ PGND CZ1 COMP CP1 RZ1 FBDDQ VDDQ http://onsemi.com 2 5VDUAL VDDQ L 2.5V, 15A COUT1 CZ2 R1 RZ2 R2 ...
Page 3
... NCP5203 Figure 2. Detailed Block Diagram http://onsemi.com 3 ...
Page 4
... Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. 1. All voltages are with respect to AGND (Pin 6) and PGND (Pin 16). NCP5203 Description Symbol 5VDUAL ...
Page 5
... Unity Gain Bandwidth Slew Rate Gate Drivers TGDDQ Gate Pull−HIGH Resistance TGDDQ Gate Pull−LOW Resistance BGDDQ Gate Pull−HIGH Resistance BGDDQ Gate Pull−LOW Resistance 2. Guaranteed by design, not tested in production. NCP5203 = Test Conditions − − − VDDQEN = 0 V, VTTEN = 0 V Falling Edge − ...
Page 6
... VDDQEN Pin Threshold Low VDDQEN Pin Input Current VTTEN Pin Threshold High VTTEN Pin Threshold Low VTTEN Pin Input Current PGOOD Pin ON Resistance PGOOD Pin OFF Current NCP5203 (5VDUAL = 5 Test Conditions REFSNS – VTT, IOUT = 0 to 2.0 A (Sink Current) IOUT = 0 to – ...
Page 7
... General The NCP5203 2−in−1 DDR Power Controller combines the efficiency of a VDDQ PWM controller with the simplicity of a linear regulator for VTT termination. Both VDDQ and VTT outputs can be user adjusted. The inclusion of both VDDQ and VTT power good voltage monitors, soft−start, VDDQ overvoltage and ...
Page 8
... A magnitude. This current limit is also used as constant current source during VTT startup. NCP5203 VTT Active Terminator Thermal Consideration The VTT terminator is designed to handle large transient output currents. If large currents are required for very long duration, then care should be taken to ensure the maximum junction temperature is not exceed. The 5x6 QFN− ...
Page 9
... VTT goes into normal mode. VDDQEN goes HIGH, VDDQ is activated. VTTEN goes HIGH, VTT is not activated until VDDQ is Good. Figure 3. Powerup and Powerdown Timing Diagram NCP5203 VTT in H−Z 200 VTTEN goes LOW to activate S3 mode and to turn off VTT, then INREGVTT goes LOW, PGOOD goes LOW ...
Page 10
... COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. MILLIMETERS DIM MIN MAX A 0.80 1.00 A1 0.00 0.05 A2 0.65 0.75 A3 0.20 REF b 0.23 0.28 D 6.00 BSC D2 3.98 4.28 E 5.00 BSC E2 2.98 3.28 e 0.50 BSC K 0.20 −−− L 0.50 0.60 ON Semiconductor Website: http://onsemi.com Order Literature: http://www.onsemi.com/litorder For additional information, please contact your local Sales Representative. NCP5203/D ...