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Single Buck PWM Controller With Linear Regulator CXSD62109 is a single-phase, constant on-time, synchronous PWM controller with linear regulator, which drives N-channel MOSFETs. The CXSD62109 steps d

The CXSD62109 is a single-phase, constant on-time, synchronous PWM controller with linear regulator, which drives N-channel MOSFETs. The CXSD62109 steps down high voltage to generate low-voltage chipset or RAM supplies in notebook computers. The CXSD62109 provides excellent transient response and accurate DC voltage output in either PFM or PWM Mode. In Pulse Frequency Mode (PFM), the CXSD62109 provides very high efficiency over light to heavy loads with loadingmodulated switching frequencies. In PWM Mode, the converter works nearly at constant frequency for low-noise requirements. The CXSD62109 is equipped with accurate positive current limit, output under-voltage, and output over-voltage protections, perfect for various applications. The PowerOn-Reset function monitors the voltage on VCC and PVCC to prevent wrong operation during power-on. The CXSD62109 has a 1.5ms digital soft start and built-in an integrated output discharge device for soft stop. An internal soft-start ramps up the output voltage with programmable slew rate to reduce the start-up current. A soft-stop function actively discharges the output capacitors. The integrated linear regulator could drive an external NChannel MOSFET and provides an adjustable output by using an external resistive divider. It is easy to be used because there is independent enable function and power OK indicator at linear regulator part. Moreover, linear regulator has soft start, under-voltage and overtemperature protection to become the great second output voltage of the CXSD62109 The ACXSD62109is available in 16pin TQFN packages respectively

产品特点 返回TOP

PWM Controller

· Adjustable Output Voltage from +0.75V to +3.3V

- 0.75V Reference Voltage

- ±1% Accuracy Over-Temperature

· Operates from An Input Battery Voltage Range of +3V to +28V

· Power-On-Reset Monitoring on VCC Pin and PVCC Pin to Avoid Wrong Sequence

· Excellent Line and Load Transient Responses

· PFM Mode for Increased Light Load Efficiency

· Programmable PWM Frequency from 100kHz to 500kHz

· Integrated MOSFET Drivers

· Integrated Bootstrap Forward P-CH MOSFET

· Integrated Soft-Start

· Selectable Forced PWM or Automatic PFM/PWM Mode

· Power Good Monitoring

· 70% Under-Voltage Protection

· 125% Over-Voltage Protection

· Adjustable Current-Limit Protection

- Using Sense Low-Side MOSFET’s RDS(ON)

· Over-Temperature Protection LDO Controller

· 0.75V Reference Voltage with 1.5% Accuracy Over Temperature

· Independent Enable and Power OK Function

· 50% Under-Voltage Protection

· Integrated Soft-Start Function

· TQFN-16 3x3 package

· Lead Free and Green Device Available (RoHS Compliant)

应用范围 返回TOP

· Notebook

· Table PC

· Hand-Held Portable

· AIO PC

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Switching Regulator > Buck Controller
Part_No	Package	Topology	Archi tectu	Phase	No.of PWM Output	Output Current (A)	Input Voltage (V)		Reference Voltage (V)	Bias Voltage (V)	Quiescent Current (uA)
Part_No	Package	Topology	Archi tectu	Phase	No.of PWM Output	Output Current (A)	min	max	Reference Voltage (V)	Bias Voltage (V)	Quiescent Current (uA)
CXSD6273	SOP-14\|QSOP-16 QFN4x4-16	Buck	VM	1	1	30	2.9	13.2	0.9	12	8000
CXSD6274	SOP-8	Buck	VM	1	1	20	2.9	13.2	0.8	12	5000
CXSD6274C	SOP-8	Buck	VM	1	1	20	2.9	13.2	0.8	12	5000
CXSD6275	QFN4x4-24	Multiphase	VM	2	1	60	3.1	13.2	0.6	12	5000
CXSD6276	SOP-8	Buck	VM	1	1	20	2.2	13.2	0.8	5~12	2100
CXSD6276A	SOP-8	Buck	VM	1	1	20	2.2	13.2	0.8	5~12	2100
CXSD6277/A/B	SOP8\|TSSOP8	Buck	VM	1	1	5	5	13.2	1.25\|0.8	5~12	3000
CXSD6278	SOP-8	Buck	VM	1	1	10	3.3	5.5	0.8	5	2100
CXSD6279B	SOP-14	Buck	VM	1	1	10	5	13.2	0.8	12	2000
CXSD6280	TSSOP-24 \|QFN5x5-32	Buck	VM	1	2	20	5	13.2	0.6	5~12	4000
CXSD6281N	SOP14\|QSOP16 \|QFN-16	Buck	VM	1	1	30	2.9	13.2	0.9	12	4000
CXSD6282	SOP-14	Buck	VM	1	1	30	2.2	13.2	0.6	12	5000
CXSD6282A	SOP-14	Buck	VM	1	1	30	2.2	13.2	0.6	12	5000
CXSD6283	SOP-14	Buck	VM	1	1	25	2.2	13.2	0.8	12	5000
CXSD6284/A	LQFP7x7 48 \|TQFN7x7-48	Buck\|Boost \|Flyback	VM	1	6	0.015	1.4	6.5	-	5	1800
CXSD6285	TSSOP-24P	Buck	VM	1	2	20	2.97	5.5	0.8	5~12	5000
CXSD6286	SOP-14	Buck	VM	1	1	10	5	13.2	0.8	12	3000
CXSD6287	SOP-8-P\|DIP-8	Buck	VM	1	1	30	2.9	13.2	1.2	12	3000
CXSD6288	SSOP28 QFN4x4-24	Buck	VM	1	2	20	5	24	0.9	5	1200
CXSD6289	SOP-20	Buck	VM	1	2	20	2.2	13.2	0.6	5~12	4000
CXSD6290	SOP8\|DFN3x3-10		VM	1	2	-	-	-	-	5~12	550
CXSD6291HC	DIP8\|SOP-8	Buck\|Boost \|Flyback \|Forward	VM	1	1	1	1.2	9	24	5	9 ~ 24
CXSD6292	SSOP16\|QFN4x4-16 \|TQFN3x3-16	Buck	VM	1	1	25	3	25	0.6	5	1700
CXSD6293	TDFN3x3-10	Buck	COT	1	1	25	3	25	0.5	5	350
CXSD6294	QFN4x4-24	Buck	CM	2	1	40	4.5	13.2	0.6	5~12	4000
CXSD6295	SOP8P\|TDFN3x3-10	Buck	VM	1	1	20	3	13.2	0.8	5~12	2500
CXSD6296A\|B\|C\|D	SOP8P	Buck	VM	1	1	25	3	13.2	0.6\|0.8	5~12	1200
CXSD6297	TDFN3x3-10	Buck	VM	1	1	25	4	13.2	0.8	5~12	2000
CXSD6298	TDFN3x3-10	Buck	COT	1	1	25	4.5	25	0.6	5~12	80
CXSD6299\|A	SOP-8P	Buck	VM	1	1	25	4.5	13.2	0.8	5~12	16000
CXSD62100	TQFN3x3-10	Buck	VM	1	1	25	4.5	13.2	0.6	5~12	2500
CXSD62101\|L	TDFN3x3-10	Buck	COT	1	1	30	3	25	0.8	5~12	2000
CXSD62102	TQFN3x3-16	Buck	COT	1	1	30	1.8	28	0.6	5	600
CXSD62102A	TQFN 3x3 16	Buck	COT	1	1	30	1.8	28	0.6	5	600
CXSD62103	QFN4x4-24	Buck	VM	2	1	50	4.5	13.2	0.6	5~12	5000
CXSD62104	TQFN4x4-24	Buck	COT	1	2	15	6	25	2	N	550
CXSD62105	TQFN4x4-24	Buck	COT	1	2	15	6	25	2	N	550
CXSD62106\|A	TQFN4x4-4 TQFN3x3-20	Buck	COT	1	2	20	3	28	0.75	5	800
CXSD62107	TQFN3x3-16	Buck	COT	1	1	20	1.8	28	0.75	5	400
CXSD62108	QFN3.5x3.5-14 \|TQFN3x3-16	Buck	COT	1	1	20	1.8	28	0.75	5	400
CXSD62109	TQFN3x3-16	Buck	COT	1	2	20	1.8	28	0.75	5	400
CXSD62110	QFN3x3-20 TQFN3x3-16	Buck	COT	1	2	20	3	28	1.8\|1.5\|0.5	5	740
CXSD62111	TQFN4x4-24 \|QFN3x3-20	Buck	CM	1	2	15	5	28	0.5	N	3000
CXSD62112	TDFN3x3-10	Buck	COT	1	1	20	1.8	28	0.5	5	250
CXSD62113\|C	TQFN3x3-20	Buck	COT	1	2	15	6	25	2	N	550
CXSD62113E	TQFN 3x3 20	Buck	COT	2	2	11	6	25	2	N	550
CXSD62114	TQFN3x3-20	Buck	COT	2	2	11	5.5	25	2	N	280
CXSD62115	QFN4x4-24	Multiphase	VM	2	1	60	3.1	13.2	0.85	12	5000
CXSD62116A\|B\|C	SOP-8P	Buck	VM	1	1	20	2.9	13.2	0.8	12	16000
CXSD62117	SOP-20	Buck	VM	2	2	30	10	13.2	1	12	5000
CXSD62118	TDFN3x3-10	Buck	COT	1	1	25	1.8	28	0.7	5	250
CXSD62119	TQFN3x3-20	Buck	COT	2	1	40	1.8	25	REFIN Setting	5	700
CXSD62120	QFN 3x3 20 TQFN 3x3 16	Buck	COT	1	2	20	3	28	1.8\|1.5 1.35\|1.2 0.5	5	800
CXSD62121A	TQFN3x3 20	Buck	COT	1	2	15	3	28	0.75	5	220
CXSD62121B	TQFN3x3 20	Buck	COT	1	2	15	3	28	0.75	5	220
CXSD62121	TQFN3x3-20	Buck	COT	1	2	20	3	28	0.75	5	180

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Single Buck PWM Controller With Linear Regulator CXSD62109 is a single-phase, constant on-time, synchronous PWM controller with linear regulator, which drives N-channel MOSFETs. The CXSD62109 steps d

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