HX1001 HX1001
700mA Synchronous Buck DC/DC Converter Features
Up to 95% Efficiency Current Mode Operation for Excellent Line and Load Transient Respon Low Quiescent Current: 230 A Low Switch on Resistance RDS(ON), Internal Switch: 0.35 Output Voltage 5.5V 0.6V Automatic PWM/PFM Mode Switching No Schottky Diode Required 1.4MHz Fixed Frequency Switching Short-Circuit Protection Shutdown Quiescent Current: < 1 A Low Profile SOT-23-5 Package (lead-free packaging is now available) 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. Digital cameras and MP3 Palmtop computers / PDAs Cellular phones Wireless handts and DSL modems PC cards Portable media players The 1001 converters are available in the industry standard SOT-23-5 power packages (or upon request).
Description
The HX1001 is high efficiency synchronous, PWM step-down DC/DC converters working under an input voltage range from 2.5V to 5.5V. This feature makes the HX1001 suitable for single Li-Lon battery-
powered applications. 100% duty cycle capability extends battery life in portable devices, while the quiescent current is 230 A with no load, and drops to < 1 A in shutdown.
Application
Order Information
Symbol Denotes Output voltage:
②①
1001 –
: Description K:1.2V Output; C:1.8V Output;G:3.3V Output A:Adjustable Output Denotes Package Types: E: SOT-23-5
1
µ
µ
µ
µ
～
：
① ②
1001
电脑pptTypical Applications
FIXED OUTPUT VOLTAGE
Model 1001-KE 1001-CES 1001-GES
VOUT (V) 1.2 1.8 3.3
VIN (V) 2.2~5.5 2.5~5.5 3.4~5.5
Mark -KG -UG -NG
ADJUSTABLE OUTPUT VOLTAGE
Model 1001-AES
VOUT (V) Adjustable Output Voltage
Mark -VG
）
2
VOUT = 0.6V • [1 + (R1/R2)]
（
1001
Pin Assignment
5 4
PIN NUMBER SOT-23- 5 1 2 3 4 EN GND SW VIN VFB ON/OFF Control (High Enable) Ground Switch Output Input Feedback Pin PIN NAME FUNCTION
1
2
3
5
SOT-23-5
Functional Diagram
3
HX1001
世界战机排名Absolute Maximum Ratings
Power Dissipation………………………………………………………………………Internally limited VIN …………………………………………………………………………………………..- 0.3 V +6V VSW …………………………………………………………………………………- 0.3 V
Lead Temperature (Soldering 10 c.) ………………………………………………………..+ 300 Storage Temperature Range ……………………………………………………….- 65 + 150 Junction Temperature ……………………………………………………………………………+ 125陀螺比赛
Electrical Characteristics
SYMBOL VOUT VIN VFB IFB VFB
PARAMETER Output Voltage Input Voltage Range
Feedback Current VREF Oscillator Frequency Quiescent Current Shutdown Current Peak Inductor Current
VIN=2.5V~5.5V VFB = 0.6V or VOUT = 100% VFB = 0.5V or VOUT = 90%, ILOAD = 0A VEN = 0V, VIN = 4.2V VIN = 3V, VFB = 0.5V or VOUT = 90%, 0.75 Duty Cycle < 35% 1.1
FOSC IQ IS IPK
0.9
1
奇门遁甲八门RPFET RNFET
RDS(ON) of P-Channel FET RDS(ON) of N-Channel FET
ISW = 100mA ISW = -100mA When connected to ext. components
0.4 0.35
0.5 0.45
EFFI
Efficiency VIN=EN=3.6 V, IOUT=100mA VOUT Line Regulation VOUT Load Regulation VIN=2.5V~5.5V
93
VOUT
0.03 0.33
0.3
%/V %
VLOADREG
EFFI = [(Output Voltage × Output Current) / (Input Voltage × Input Current)] × 100%
4
µ
0.1
1
µ
℃
Regulated Voltage
℃
Operating Conditions: TA=25
, VIN=3.6V unless otherwi specified.
CONDITIONS I OUT = 100mA, R1/R2=2
MIN 1.75 2.5
TYP 1.80
喀喇沁亲王府MAX 1.85 5.5
UNITS V V V nA %/V MHz A A
TA = 25
0.5880
0.6
0.6120 ±30
0.03 1.4 200
风筝作文0.4 1.7 300
A
%
℃ ℃ ℃ ℃
ISW ………………………………………………………………………………………………………..1.3A Operating Temperature Range ……………………………………………………...- 40 + 85
～
VFB……………………………………………………………………………………….....- 0.3 V
～℃
～℃
～ ～
VON/OFF ……………………………………………..……………………...……- 0.3 V
(VIN + 0.3) V (VIN + 0.3) V +6V
～
＊
∆ ∆
1001
Typical Performance Characteristics
Efficiency vs. Output Current (Vout=1.2V) 100 90 80 Efficiency (%) 70 60 50 40 30 20 10 0 1 10 100 1000 Output Current (mA)
VIN=4.2V VIN =2.7V
Efficiency vs. Input Voltage (Vout=1.8V) 100 90 80 Efficiency (%)
IOUT=100mA IOUT=10mA IOUT=600mA IOUT=1mA
VIN =3.6V
70 60 50 40 30 20 10 0 2
3
4
5
6
Input Voltage (V)
100 90 80 70 60 50 40 30 20 10 0 1
Efficiency vs. Output Current (Vout=1.5V)
VIN =2.7V VIN=3.6V VIN =4.2V
Efficiency vs. Output Current (Vout=2.5V) 100 90 80 Efficiency(%) 70 60 50 40 30 20 10 0
VIN =2.7V VIN =3.6V V IN =4.2V
Efficiency (%)
10 100 Output Current (mA)
摘抄好词好句大全1000
1
老子的著作10 100 Output Current (mA)
1000
5
