The JTMT9110/9111 series is a group of PFM controlled step-u

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 JTMT9110/9111 series is a group of PFM controlled step-up DC/DC converter/controller ICs designed to generate low
supply voltage by the combination of PFM control and CMOS structure. The series is ideal for applications where a longer battery
life is needed such as in portable communication equipment. With a built-in 2.5ΩN-channel driver transistor, the JTMT9110A/C/E
and JTMT9111A/C/E types provide a step-up operation by using only a coil, a capacitor, and a diode connected externally.
The JTMT9110/9111B, D and F versions can be used with an external transistor for applications requiring larger currents.
Output voltage is internally programmable in a range from 1.5V to 7.0V in increments of 100mV (accuracy:±2.5%).
Maximum oscillation frequency is set to 100kHz for JTMT9110/9111 series. (At light loads, it is set to 180kHz for the JTMT9111
series.) Options include products equipped with a CE pin (C and D versions) that allows the IC to be shut down thereby reducing
supply current and with separated VDD/VOUT pins (E and F versions) to separate the power supply block and the output voltage
detect block. With the JTMT9110 series, maximum duty cycle is set to 75% (VDD=3.3V) making it suitable for use with large current
operations. The JTMT9111 series automatically switches duty ratio between 56% & 75% (VDD=3.3V) when it senses changes in load to
drop output ripple voltage and can support both large and small currents. The external transistor types (B/D/F types) can be
provided for applications, which require larger currents.
二.产品特点(Features)

Operating (Input) Voltage Range	0.9V~10.0V
Output Voltage Range	1.5V~7.0V,100mV increments,accuracy ± 2.5%
Maximum Oscillation Frequency	100kHz(accuracy±15%),180kHz(for the JTMT9111 series,duty ratio:56% at light loads)
Built-in Switching N-ch Transistor	A/C/E type,ON Resistance 2.5Ω(VDD=3.0V)
External Transistor Types	B/D/F type
Package	SOT-23,SOT-25,USP-6C,SOT-89
Lx Limit Voltage:	E type : More than VDD=2.0V,A/C type : More than VOUT=2.0V

三,应用范围 (Applications)

●Mobile phones
●Various palm top equipment
●Cameras, VCRs
●Various portable equipment
四.技术规格书下载（产品PDF）

JTMT9110/JTMT9111

五,产品封装图 (Package)

六.电路原理图

JTMT9110/JTMT9111 TYPICAL APPLICATION CIRCUIT

七,功能概述

PARAMETER		SYMBOL	RATINGS	UNITS
VOUT Input Voltage		VOUT	– 0.3 ~ 12.0	V
Lx Pin Voltage		VLx	– 0.3 ~ 12.0	V
Lx Pin Current		ILx	400	mA
EXT Pin Voltage		VEXT	VSS – 0.3 ~ VOUT＋0.3	V
EXT Pin Current		IEXT	±100	mA
CE Input Voltage		VCE	– 0.3 ~ 12.0	V
VDD Input Voltage		VDD	– 0.3 ~ 12.0	V
Power Dissipation	SOT-23, 25	Pd	250	mW
	SOT-89		500
	USP-6C
120
Operating Ambient Temperature
Topr	– 40 ~ + 85	℃
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
JTMT6367	PWM/PFM	0.9	10	1.5	6.5	1000	100kHz	None	SOT-25
JTMT6368							180kHz
							300kHz
							500kHz
JTMT6371	PWM/PFM	0.9	10	2	7	100	50kHz	Nch FET	SOT-89
JTMT6372							100kHz		SOT-89-5
							180kHz		USP-6B
JTMT9101	PWM	2.5	20	2.2	30	1500	100~600kHz	None	MSOP-8A
JTMT9103	PWM/PFM	0.9	10	1.5	30	1000	100kHz	None	SOT-25
JTMT9104							180kHz		USP-6B
JTMT9105							300kHz
							500kHz
JTMT9106	PWM/PFM	0.9	10	1.5	30	1000	100kHz	None	SOT-25
JTMT9107							300kHz		USP-6B
JTMT9110	PFM	0.9	10	1.5	7	100	100kHz	Nch FET	SOT-23
JTMT9111									SOT-25
									SOT-89
									USP-6C
JTMT9116	Backlight LED Driver	2.5	6	8	18	20	1MHz	Nch FET	SOT-25
									USP-6B
JTMT9119	PWM	2.5	6	10	18	100	1MHz	Nch FET	SOT-25
									USP-6C
JTMT9120	PWM/PFM	0.9	6	1.5	30	80	100kHz	None	SOT-25
JTMT9121									USP-6C
JTMT9122
JTMT9128	1A Driver Transistor Built-In	0.8	6	1.8	5.3	500	1.2MHz	Nch FET	MSOP-10
JTMT9129								Pch FET	USP-10B
JTMT9131	Load Disconnection Function	0.65	5.5	1.8	5	500	1.2MHz	Nch FET	USP-10B
								Pch FET
JTMT9133	LED Backlight	2.5	6	2.5	17.5	20	1MHz	MOSFET	SOT-25
JTMT9135	1A Driver Transistor Built-In	0.65	5.5	1.8	5	500	1.2MHz	Nch FET	USP-10B
JTMT9136								Pch FET
JTMT9140	Synchronous PFM	0.9	5.5	1.8	5	100	-	N-ch Driver Tr	SOT-25
								P-ch Synchronous Switch Transistor	USP-6EL
JTMT9141	Load Disconnection Function	0.65	6	1.8	5.5	350	1.2MHz	Nch FET	SOT-25
JTMT9142							3.0MHz	Pch FET	USP-6C
									WLP-6-01

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