XC9216
Synchronous Buck DC/DC Converter XC9216
Features
Description
Up to 95% Efficiency
Current mode operation for excellent line
and load transient respon
Low quiescent current: 230µA
Low Switch on Resistance
luckydogInternal Switch: 0.35Ω
： ～ Output voltage 5.5V 0.6V
2010年考研英语真题
RDS(ON),
瘦肉精 英文Automatic PWM/PFM mode switching
No Schottky diode required
1.4MHz fixed frequency switching
Short-Circuit protection
Shutdown quiescent current: < 1µA
Low profile SOT-23-5 package (lead-free
packaging is now available)
Application
Digital cameras and MP3 Palmtop computers / PDAs Cellular phones Wireless handts and DSL modems PC cards Portable media players
The XC9216 is high efficiency synchronous, PWM step-down DC/DC converters working under an input voltage range of 2.5V to 5.5V. This feature makes the XC9216 suitable for single Li-lon battery-powered applications. Automatic PWM/PFM mode switching saves power at light load. 100% duty cycle capability extends battery life in portable devices, while the
quiescent current is 230µA with no load, and drops to < 1µA in shutdown.
The internal synchronous switch is desired to increa efficiency without an external Schottky diode. The 1.4 MHz fixed switching frequency allows the using of tiny, low profile inductors and ceramic capacitors, which minimized overall solution footprint.
The XC9216 converters are available in the industry standard SOT-23-5 power packages (or upon request).
Order Information
① ② XC9216 -
:
SYMBOL
① ②
DESCRIPTION Denotes Output voltage: B : 1.5V Output; C : 1.8V Output; G:3.3V Output;A : Adjustable Output Denotes Package Types: E: SOT-23-5
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Typical Applications
FIXED OUTPUT VOLTAGE
XC9216
MODEL XC9216-KE XC9216-BE XC9216-CE XC9216-GE
VOUT (V) 1.2 1.5 1.8 3.3
ADJUSTABLE OUTPUT VOLTAGE
comic
VIN (V) 2.2~5.5 2.4~5.5 2.5~5.5 3.4~5.5
MARK F1CE F1F8 F1LE F1F3
MODEL XC9216-AE
VOUT (V) Adjustable Outputruixin
Voltage
MARK F1L9
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THE DEVICE RECOMMENDED
XC9216
VOUT (V)
CAPACITOR SIZE/TYPE
recentCIN(µF)
COUT(µF)
1.2 4.7/10(0805) 10(0805) 1.5 4.7/10(0805) 10(0805)
1.8 4.7/10(0805) 10(0805) 3.3 4.7/10(0805) 10(0805)
RESISTOR SIZE/TYPE
R2(KΩ)
100 (0805) 1000(0805) 200(0805) 330(0805)
R1(KΩ)
100 (0805) 620(0805) 100(0805) 75(0805)
达令的英文INDUCTOR SIZE/TYPE
μ( H) μ CKH4B28-2.2 H μ CKH4B28-2.2 H μ CKH4B28-2.2 H μ CKH4B28-2.2 H
Pin Assignment
5
4
口才培训>读mba
1
2
3
SOT-23-5
PIN NUMBER SOT-23- 5
1 2
PIN NAME
VIN GND
3
EN
4
VOUT
5
SW
FUNCTION
Input Ground ON/OFF Control (High Enable) Output Switch Output
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Functional Diagram
XC9216
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Absolute Maximum Ratings
百度英语翻译器XC9216
Power Dissipation………………………….…….…………………………Internally limited
～ VIN …………………………………..……………….……………………………..- 0.3 V + 6 V
～ VON/OFF ………………………………………………….…………………………- 0.3 V (VIN + 0.3) V
～ VSW ……………………………………..………………………………- 0.3 V (VIN + 0.3) V
～ V F B … … … … … … … … … … … … … . . … . … … … … … … … … … … . . . . . - 0 . 3 V
+6V
℃ ～ ℃ IS W ………………………………………….…………………..……………………………..1.3A
Operating Temperature Range ………………………………………...- 40
+ 85
℃ Lead Temperature (Soldering 10 c.) …………………………………………………..+ 300
℃ ～ ℃ Storage Temperature Range ………………………..……………………….….- 65
+ 150
℃ Junction Temperature ……………………….…..………………..………………………+ 125
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