CS5212GD14 Datasheet PDF - ON Semiconductor
| Part Number | CS5212GD14 | |
| Description | Low Voltage Synchronous Buck Controller | |
| Manufacturers | ON Semiconductor | |
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CS5212
Low Voltage Synchronous
Buck Controller
The CS5212 is a low voltage synchronous buck controller. It
contains all required circuitry for a synchronous buck converter using
external N–Channel MOSFETs. High current internal gate drivers are
capable of driving high gate capacitance of low RDS(on) NFETs for
better efficiency. The V2™ control architecture is used to achieve
unmatched transient response, the best overall regulation and the
simplest loop compensation.
Additionally, the CS5212 provides overcurrent protection,
undervoltage lockout, soft start, built–in adaptive non–overlap, and an
adjustable fixed frequency range of 150 kHz to 750 kHz, which gives
the designer more flexibility to make efficiency and component size
trade offs. The CS5212 will also operate over a 3.1 V to 7.0 V range
using either single or dual input voltage.
Features
• Switching Regulator Controller
– N–Channel Synchronous Buck Design
– V2 Control Topology
– 200 ns Transient Response
– Programmable Fixed Frequency of 150 kHz–750 kHz
– 1.0 V 1.5% Internal Reference
– Lossless Inductor Sensing Overcurrent Protection
– Hiccup Mode Short Circuit Protection
– Programmable Soft Start
– 40 ns GATE Rise and Fall Times (3.3 nF Load)
– 70 ns Adaptive FET Nonoverlap Time
– Differential Remote Sense Capability
– Available in Industrial and Commerical Temperature Grades
• System Power Management
– 3.3 V Operation
– Undervoltage Lockout
– On/Off Control Through Use of the COMP Pin
http://onsemi.com
MARKING
DIAGRAM
14
SOIC–14
D SUFFIX
CASE 751A
CS5212x
AWLYWW
1
x
A
WL, L
YY, Y
WW, W
= E or G
= Assembly Location
= Wafer Lot
= Year
= Work Week
PIN CONNECTIONS
1
GATE(H)
BST
LGND
VFFB
VFB
COMP
SGND
PGND
GATE(L)
VC
IS+
IS–
VCC
ROSC
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
© Semiconductor Components Industries, LLC, 2002
May, 2002 – Rev. 2
1
Publication Order Number:
CS5212/D
|
| |
 
CS5212
PACKAGE PIN DESCRIPTION
PIN NO.
PIN SYMBOL
1 GATE(H)
2 BST
3 LGND
4 VFFB
5 VFB
6 COMP
7 SGND
8 ROSC
9 VCC
10 IS–
11 IS+
12 VC
13 GATE(L)
14 PGND
FUNCTION
High Side Switch FET driver pin. Capable of delivering peak currents of 1.0 A.
Power supply input for the high side driver.
Reference ground. All control circuits are referenced to this pin. IC substrate connection.
Input for the PWM comparator.
Error amplifier input.
Error Amp output. PWM Comparator reference input. A capacitor to LGND provides error amp
compensation.
Internal reference is connected to this ground. Connect directly at the load for ground remote
sensing.
A resistor from this pin to SGND sets switching frequency.
Input Power Supply Pin. It supplies power to control circuitry. A 0.1 µF Decoupling cap is
recommended.
Negative input for overcurrent comparator.
Positive input for overcurrent comparator.
Power supply input for the low side driver.
Low Side Synchronous FET driver pin. Capable of delivering peak currents of 1.0 A.
High Current ground for the GATE(H) and GATE(L) pins.
VFFB
0.5 V
Σ
PWM Comparator
Reset Dominant
RQ
COMP
VFB
SGND
VCC
IS+
IS–
LGND
− Error Amp
+
1.0 V
ART Ramp
OSC
ROSC
Fault
SQ
PWM FF
0.8 V
VSTART
100 % DC
− Comparator
+
UVLO
Comparator
UVLO
Set Dominant
Fault
SQ
60 mV
OC
Comparator
0.25 V
−
+
RQ
5.0 µA
COMP Discharge COMP
Figure 2. Block Diagram
BST
GATE(H)
VC
GATE(L)
PGND
ROSC
http://onsemi.com
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for CS5212GD14 electronic component. |
| Information | Total 16 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ CS5212GD14.PDF Datasheet ] | |
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