JTMT219/JTMT220 series is a synchronous step-down micro DC/D

1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（产品PDF文档）
5.产品封装图 6.电路原理图 7.功能概述 8.相关产品

一,产品概述(General Description)

The JTMT219/JTMT220 series is a synchronous step-down micro DC/DC converter which integrates an inductor and
a control IC in one tiny package (2.0mm×2.5mm, h=1.0mm). An internal coil simplifies the circuit and enables minimization
of noise and other operational trouble due to the circuit wiring. A wide operating voltage range of 2.5V to 5.5V enables
support for applications that require an internally fixed output voltage (0.8V to 3.6V). The JTMT219/JTMT220 series uses
synchronous rectification at an operating frequency of 3.0MHz. The JTMT219/JTMT220 series uses HiSAT-COT (*)
synchronous rectification.HiSAT-COT+PWM control (JTMT219) or HiSAT-COT+automatic PWM/PFM switching control
(JTMT220) can be selected.The series have a high speed soft-start as fast as 0.3ms in typical for quick turn-on. With the
built-in UVLO (Under Voltage Lock (Out) function, the internal P-channel driver transistor is forced OFF when input voltage
becomes 2.0V or lower. When CE=Low,the integrated CL discharge function which enables the electric charge at the
output capacitor CL to be discharged via the internal discharge switch located between the LX and VSS pins. The power
consumption will be less than 1.0μA.
二.产品特点(Features)

Input Voltage : 2.5V～5.5V
Output Voltage : 0.8V～3.6V(±2.0%)
Oscillation Frequency : 3.0MHz
Output Current : 1.0A Efficiency : 93% (VIN=5.0V, VOUT=3.3V/300mA)
Control Methods : HiSAT-COT 100% Duty Cycle HiSAT-COT+PWM (XCL219) HiSAT-COT+PWM/PFM (XCL220)
Circuit Protection : Thermal Shut Down Current Limit Circuit (Drop) Short Circuit Protection (Latch)
Functions : Soft-start Circuit Built-in UVLO CL Discharge
Output Capacitor : Low ESR Ceramic Capacitor
Operating Ambient Temperature : -40℃～+105℃
Package : CL-2025-02
Environmental Friendly : EU RoHS Compliant, Pb Free
三,应用范围 (Applications)

●Note Book PC
●Tablet PC
●SSD(Solid State Drive)
●Mobile phone
●Digital still camera
●Portable game machine
四.技术规格书下载（产品PDF）

JTMT219/JTMT220

五,产品封装图 (Package)

PIN NUMBER	PIN NAME	FUNCTIONS
1	Lx	Switching Output
2	AGND	Analog Ground
3	VOUT	Fixed Output Voltage PIN
4	CE	Chip Enable
5	PGND	Power Ground
6	VIN	Power Input
7	L1	Inductor Electrodes
8	L2	Inductor Electrodes

六.电路原理图

JTMT219/JTMT220 TYPICAL APPLICATION CIRCUIT

七,功能概述

PARAMETER	SYMBOL	RATINGS
VIN Pin Voltage	VIN	-0.3 ~ + 6.2
LX Pin Voltage	VLx	(*1) - 0.3 ~ VIN + 0.3 or + 6.2
VOUT Pin Voltage	Vout	(*2) - 0.3 ~ VIN + 0.3 or + 4.0
CE Pin Voltage	VCE	- 0.3 ~ + 6.2
Power Dissipation	Pd	(*3) 1000
Operating Ambient Temperature	Topr	- 40 ~ + 105
Storage Temperature	Tstg	- 55 ~ + 125

八,相关芯片选择指南

系列名称	特点	输入电压		输出电压		最大输出电流	振荡频率	内置FET	封装
		(V)		(V)		(mA)
		最小	最大	最小	最大
JTMT101XCL	Inductor Built-in Step-up	0.9	5.5	1.8	5	100	1.2MHz	P-ch FET	CL-2025
								N-ch FET	CL2025-02
JTMT201XCL	Inductor Built-in	2	6	0.8	4	400	1.2MHz	N-ch FET	CL-2025
JTMT202XCL								P-ch FET	CL2025-02
JTMT205XCL	Inductor Built-in	2	6	0.8	4	600	3.0MHz	N-ch FET	CL-2025
JTMT206XCL								P-ch FET	CL2025-02
JTMT207XCL
JTMT208XCL	Inductor Built-in	1.8	6	0.8	4	400	3.0MHz	N-ch FET	USP-10B03
JTMT209XCL								P-ch FET
JTMT210XCL	Inductor Built-in	2	6	1	4	-	-	Pch	CL2025-02
								Nch
JTMT211XCL	Inductor Built-in	2.7	6	0.9~VIN		2000	2.4MHz	N-ch FET	USP-11B01
JTMT212XCL								P-ch FET
JTMT213XCL	Inductor Built-in	2.7	5.5	0.8	3.6	1500	3.0MHz	N-ch FET	USP-9B01
JTMT214XCL								P-ch FET
JTMT219XCL	Inductor Built-in	2.5	5.5	0.8	3.6	1000	3.0MHz	N-ch FET	CL2025-02
JTMT220XCL								P-ch FET

JTMT221XCL	Inductor Built-in	2.5	5.5	0.8	3.6	500	1.2MHz	N-ch FET	CL2025-02
JTMT222XCL								P-ch FET

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