AMS6104 Datasheet PDF - AMS


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AMS6104
AMS

Part Number AMS6104
Description 1A SWITCH BOOST CONVERTER
Page 6 Pages

AMS6104 datasheet pdf
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Advanced
Monolithic
Systems
FEATURES
Internal Power Switch
Output Voltage up to 20V
Up to 89% Efficiency
Low 0.08µA Shutdown Supply Current
Internal Current Limit
Thermal Shutdown
Available in 5-Pin SOT-23 Package
AMS6104
1A SWITCH BOOST CONVERTER
RoHS compliant
APPLICATIONS
Handheld Computers, PDA’s
Cell Phones
Digital Still and Video Games
Small LCD Displays
GENERAL DESCRIPTION
The AMS6104 is an adjustable step-up DC/DC converter with a 1Amp internal switch. The low quiescent current of typical
300µA, makes AMS6104 attractive for battery operated applications. AMS6104 operates at switching frequencies of 500 kHz
allowing for easy filtering and low noise. The reference voltage is set at 1.23V. Internally compensated and internal soft-start
minimizes the number of external components necessary. It operates from 1.3V to 15V supply and it is thermally and over
current protected. The AMS6104 is available in SOT23-5 leads package.
ORDERING INFORMATION
OUTPUT PACKAGE TYPE
VOLTAGE 5 Lead SOT-23
Adjustable AMS6104M1
TEMP.
RANGE
-25°C to 125°C
PIN CONNECTIONS
5L SOT-23
(M1)
TYPICAL APPLICATION
Top View
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723



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PIN DESCRIPTION
AMS6104
PIN
NUMBERS
1
2
3
NAME
FB
GND
SW
4 VCC
5 EN
AMS6104
DESCRIPTION
Feedback Input. Connect a resistive voltage divider from the output voltage to FB to set the
output voltage. The feedback regulation threshold is 1.23V.
Ground
High side of the Switch transistor. The Low side of the Switch transistor is internally
connected to GND
Internal Power Input. VCC powers the internal circuitry. If the input source remains above
3.0V, VCC can be connected to the input source to reduce power consumption.
Enable. A high voltage at EN turns on the converter, and a low voltage turns it off. When
not used, connect EN to the input source for automatic startup. If EN is driven over 6V,
place a 10 kto 47kresistor in series with EN.
3.3V to 5.0V application
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723



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AMS6104
ABSOLUTE MAXIMUM RATINGS
VCC
SW
All other pins
VCC Supply Voltage
Output Voltage
-0.3V to 15V
-0.5V to 20V
-0.3V to 6V
1.3V to 15V
VIN to 20V
Operating Temperature
Junction Temperature
Solder Temperature
Storage Temperature
Thermal Resistance
-20ºC to +105ºC
150ºC
230ºC
-65ºC to 150 ºC
410ºC/W
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at TA= 25 °C, VCC = VEN = 3.3V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
START-UP
Operating Input Voltage
Minimum Start-up Voltage
ENABLE
EN Threshold
EN Hysteresis
EN Input Bias Current
EN Input Bias Current
FEEDBACK COMPARATOR
FB voltage
FB Input Bias Current
OUTPUT SWITCH
SW On-Saturation voltage
SW Current Limit
SW Leakage Current
Output Switch Rise Time
Output Switch Fall Time
Switching Frequency
Maximum duty cycle
DEVICE
Efficiency
Supply Current (Shutdown)
Supply Current (Quiescent)
Load Regulation
Line Regulation
Thermal Shutdown
IOUT =25mA
VEN Rising
VEN= 1.5V
VEN= 3.3V
VFB = 1.23V
VCC = 5.0V
VSW = 20V
(inductor controlled)
VOUT = 5.0V; IOUT =1mA to 500mA
VEN = 0V, no F/B resistors
VFB = 1.3V; IOUT =0mA
VOUT = 5.0V; IOUT =1mA to 500mA
IOUT =10mA ; VCC = 3.3V to 12V
ISW=1A
AMS6104
Min. Typ. Max.
1.5 15
1.3 1.5
1.1 1.2 2.0
40
58
15 20
1.19 1.23 1.27
-15 -10
330 500
0.9 1 1.5
10
20
8
424 475 525
95
85
80 150
480 600
16 25
10 20
130
Units
V
V
V
mV
µA
µA
V
nA
mV
A
µA
ns
ns
Khz
%
%
nA
µA
mV
mV
ºC
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723



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TYPICAL PERFORMANCE CHARACTERISTICS
AMS6104
0.9
0.89
0.88
0.87
0.86
0.85
0.84
0.83
0.82
0.81
0.8
0
3.3 to 5V efficiency
0.1 0.2 0.3 0.4 0.5 0.6
1.01
1.005
1
0.995
0.99
0.985
0.98
0
Load Regulation
0.1 0.2 0.3 0.4 0.5 0.6
Efficiency VS Load for 5V output application achieving 0.5A
3.3V Input, 5V Output; normalized Load Regulation
100
95
90
85
80
75
70
65
60
0
Efficiency Vs Supply for 100mA load
2 4 6 8 10 12 14
Efficiency VS Supply for 12V Output at 100mA load
Line regualtion @10mA
1.01
1.008
1.006
1.004
1.002
1
0.998
0.996
0 2 4 6 8 10 12 14
Light Load Line regulation (reverse load regulation)
for 12V Output
Load Transient 25-75% load 12V Output
Normal Switching Waveform
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723




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