AMS AMS6104 1a switch boost converter Datasheet

Advanced
Monolithic
Systems
AMS6104
1A SWITCH BOOST CONVERTER
RoHS compliant
FEATURES
APPLICATIONS
• 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
• 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
VOLTAGE
Adjustable
PIN CONNECTIONS
PACKAGE TYPE
TEMP.
5 Lead SOT-23
RANGE
AMS6104M1
5L SOT-23
(M1)
-25°C to 125°C
TYPICAL APPLICATION
Top View
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS6104
PIN DESCRIPTION
AMS6104
PIN
NUMBERS
NAME
1
FB
2
GND
3
SW
4
VCC
5
EN
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 kΩ to 47kΩ resistor 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
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
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
TEST CONDITIONS
AMS6104
Typ.
Max.
1.3
15
1.5
V
V
1.2
40
5
15
2.0
V
mV
µA
µA
1.19
-15
1.23
-10
1.27
V
nA
0.9
330
1
500
1.5
10
424
20
8
475
mV
A
µA
ns
ns
Khz
%
Min.
1.5
IOUT =25mA
VEN Rising
1.1
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
Advanced Monolithic Systems, Inc.
www.advanced-monolithic.com
85
80
480
16
10
130
Phone (925) 443-0722
8
20
525
95
150
600
25
20
Units
%
nA
µA
mV
mV
ºC
Fax (925) 443-0723
AMS6104
TYPICAL PERFORMANCE CHARACTERISTICS
3.3 to 5V efficiency
Load Regulation
1.01
0.9
0.89
1.005
0.88
0.87
1
0.86
0.995
0.85
0.84
0.99
0.83
0.82
0.985
0.81
0.98
0.8
0
0.1
0.2
0.3
0.4
0.5
0
0.6
Efficiency VS Load for 5V output application achieving 0.5A
0.1
0.2
0.3
0.4
0.5
0.6
3.3V Input, 5V Output; normalized Load Regulation
Efficiency Vs Supply for 100mA load
Line regualtion @10mA
100
1.01
95
1.008
90
1.006
85
1.004
80
1.002
75
1
70
0.998
65
60
0.996
0
2
4
6
8
10
12
Efficiency VS Supply for 12V Output at 100mA load
Load Transient 25-75% load 12V Output
Advanced Monolithic Systems, Inc.
14
0
2
4
6
8
10
12
Light Load Line regulation (reverse load regulation)
for 12V Output
Normal Switching Waveform
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
14
AMS6104
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Waveform close-up showing Rise time
Full load (200mA) start-up 22µF Tantalum Capacitor
1mA load start-up –
3 X 1µF Ceramic output capacitor
Advanced Monolithic Systems, Inc.
Waveform close-up showing Fall time
Minimal load (1mA) start-up –
22µF Tantalum Capacitor
Full load (200mA) start-up
3 X 1µF Ceramic output capacitor
www.advanced-monolithic.com
Phone (925) 443-0722
Fax (925) 443-0723
AMS6104
PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted.
5 LEAD SOT-23 PLASTIC PACKAGE (M1
0.110-0.120
(2.794-3.048)
0.102-0.118
(2.60-3.00)
0.059-0.070
(1.50-1.75)
0.014-0.020
(0.350-0.50)
0.037
(0.95)
TYP
0.018-0.024
(0.457-0.610)
10°
NOM
0.036-0.051
(0.090-1.30)
0.0035-0.0080
(0.090-0.20)
0.003
(0.150)
MAX
Advanced Monolithic Systems, Inc.
0.075
(1.90)
TYP
www.advanced-monolithic.com
10°
NOM
0.018-0.024
(0.457-0.610)
(SOT-23-5 ) AMS DRW# 051001
Phone (925) 443-0722
Fax (925) 443-0723
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