AME AME5150AEEVADJZ

AME, Inc.
Micropower Inverting
DC/DC Converter
AME5150
n General Description
n Typical Application
The AME5150 is an inverting DC/DC converter operating from 1.5V to 5.5V input voltage range. It is capable of
VIN
1.5V~5.5V
L1
10µH
L2
10µH
C2
0.47µF
-15V
producing up to -28V of regulated negative output voltage. Built-in current-limit and fixed off-time control scheme
of AME5150 provides high efficiency over a wide range of
load conditions.
Low supply current, 400ns fixed off-time, small pack-
IN
SW
CF
D1 15pF
AME5150
C1
4.7µF
EN
R2
267KΩ
C3
4.7µF
R1
24.9KΩ
NFB
GND
age, and tiny external components makes AME5150 a
extremely compact and high efficiency voltage biasing
solution for battery-powered application. The AME5150
is available in a small SOT-25/TSOT-25 packages.
Figure. 1
1-cell Li-lon to -15V inverting converter
n Features
R1 =
l 1Ω Internal Switch
VOUT − VNFB
l Use Small Surface Mount Components
VNFB
R2
+ INFB
l Adjust Output Voltage up to -28V
l 1.5V to 5.5V Input Voltage Range
l Input under Voltage Lockout
+15V
5mA
D4
l 0.1 µA Shutdown Current
l Internal Soft Star
l All AME's Lead Free Products Meet RoHS
Standards
C4
1µF
VIN
L1
10µH
C2
0.47µF
1.5V~5.5V
n Applications
IN
l Electronic Information Organizers
l Palmtops
l Cellular and Portable Phones
l Portable Audio Systems
C5
1µF
D3
SW
AME5150
C1
4.7µF
EN
-15V
5mA
D2
CF
D1 15pF
R2
267KΩ
NFB
GND
R1
24.9KΩ
C3
4.7µF
l Various Multi-function Power Supplies
Figure. 2
15V
Dual
output converter
±
Rev.A.01
1
AME, Inc.
Micropower Inverting
DC/DC Converter
AME5150
n Function Block Diagram
L1
C1
IN
EN
L2
C2
VIN
SW
+
VOUT
C3
D1
Enable
Comp
-
Vref
VIN
VOUT
CL
Adjust
Current Limit
+
400ns one
Shot
R1
Logic
control
(EXTERNAL)
Cs
NFB
Driver
UVLO
R2
(EXTERNAL)
GND
Figure. 3
2
Rev.A.01
AME, Inc.
Micropower Inverting
DC/DC Converter
AME5150
n Pin Configuration
SOT-25/TSOT-25
Top View
5
AME5150AEEV
4
1. SW
2. GND
AME5150
3. NFB
4. EN
1
2
5. IN
3
Die Attach:
Conductive Epoxy
n Pin Description
Pin Number
Pin Name
Pin Description
1
SW
Power Switch input.
This is the drain of the internal NMOS power switch. Minimize the metal
trace area connected to this pin to minimize EMI.
2
GND
Ground.
Tie directly to ground plane.
Output voltage feedback input.
Set the output voltage by selecting values for R1 and R2 using:
3
NFB
R1 =
VOUT − VNFB
VNFB
R2
Rev.A.01
+ I NFB
4
EN
Enable control input, active high.
The enable pin is an active high control. Tie this pin above 1.5V to enable
the device. Tie this pin below 0.4V to turn off the device.
5
IN
Analog and Power input.
Input Supply Pin. Bypass this pin with a capacitor as close to the device
as possible.
3
AME, Inc.
Micropower Inverting
DC/DC Converter
AME5150
n Ordering Information
AME5150 x x x x xxx x
Special Feature
Output Voltage
Number of Pins
Package Type
Operating Ambient Temperature Range
Pin Configuration
Pin
Configuration
A
(SOT-25)
(TSOT-25)
1. SW
2. GND
3. NFB
4. EN
5. IN
Operating Ambient
Temperature Range
E: -40OC to 85OC
Package
Type
E: SOT-2X
Number
of
Pins
Output Voltage
Special Feature
V: 5
ADJ: Adjustable
Z: Lead free
Y: Lead free
& Low profile
n Ordering Information
Part Number
Marking*
Output Voltage
Package
Operating Ambient
Temperature Range
AME5150AEEVADJZ
BISww
ADJ
SOT-25
-40OC to 85OC
AME5150AEEVADJY
BISww
ADJ
TSOT-25
-40OC to 85OC
Note: ww represents the date code and pls refer to Date Code Rule on Package Dimension.
* A line on top of the first letter represents lead free plating such as BISww.
Please consult AME sales office or authorized Rep./Distributor for the availability of package type.
4
Rev.A.01
AME, Inc.
Micropower Inverting
DC/DC Converter
AME5150
n Absolute Maximum Ratings
Parameter
Symbol
Maximum
Unit
VIN
6
V
EN,VNFB
VIN
V
SW Voltage
VSW
VOUT + 0.3
V
N-Channel Switch Sink Current
ISW
600
mA
Input Supply Voltage
EN, NFB Voltages
B*
ESD Classification
Caution: Stress above the listed absolute rating may cause permanent damage to the device.
* HBM B: 2000~3999V
n Recommented Operating Conditions
Parameter
Symbol
Rating
Ambient Temperature Range
TA
- 40 to 85
Junction Temperature Range
TJ
- 40 to 125
Storage Temperature Range
TSTG
- 65 to 150
Unit
O
C
n Thermal Information
Parameter
Package
Die Attach
Symbol
Maximum
θ JC
81
Thermal Resistance*
(Junction to Case)
Unit
o
C/W
Thermal Resistance
(Junction to Ambient)
SOT-25
TSOT-25
Conductive Epoxy
Internal Power Dissipation
Solder Iron (10Sec)**
θJA
260
PD
400
350
mW
o
C
* Measure θJC on backside center of molding compund if IC has no tab.
** MIL-STD-202G 210F
Rev.A.01
5
AME, Inc.
Micropower Inverting
DC/DC Converter
AME5150
n Electrical Specifications
VIN = 3.6V, EN = VIN, TA = 25oC, CIN = 4.7µF, IL = 0A, unless otherwise noted.
Parameter
Input Voltage
Test Condition
VIN
Min
Typ
1.5
Max
Units
5.5
V
Quiescent Current
IQ
VIN = 2V, VNFB = -1.3V
65
90
µA
Shutdown Current
ISD
EN = 0V
0.1
1
µA
-1.23
-1.255
V
Feedback Trip Point
V NFB
Feedback Hysteresis
V NFB Hysteresis
Switch Current Limit
ICL
NFB Pin Bias Current
INFB
Switch RDSON
Switch Off Time
Input Undervoltage Lockout
EN Input Threshold
(High) (Enable the device)
EN Input Threshold
(Low) (Shutdown)
6
Symbol
RDSON
-1.205
5
300
VNFB = -1.23V
0.6
mV
375
450
mA
2
2.7
µA
1
1.4
Ω
t OFF
400
UVLO
1.2
nS
1.4
V
1.5
EN Threshold
V
0.4
Rev.A.01
AME, Inc.
AME5150
Micropower Inverting
DC/DC Converter
n Detailed Description
The AME5150 features a constant off-time control
scheme. Operation can be best understood by referring
to Figure 3. When the voltage at the NFB pin is larger
than -1.23V, the Enable Comp in Figure 3 enables the
device and the NMOS switch is turned on, pulling the
SW pin to ground. When the NMOS switch is on, load
current is supplied by the output capacitor C3. Once the
current in the inductor reaches the peak current limit, the
400ns One Shot turns off the NMOS switch. During this
time the energy stored in the inductor is transferred to C3
and the load. After the 400ns off-time the NMOS switch
is turned on and energy is stored in the inductor again.
This energy transfer from the inductor to the output causes
a stepping effect in the output ripple.
This cycle is continued until the voltage at NFB pin
reaches -1.23V. When NFB pin reaches this voltage, the
enable comparator then disables the device turning off
the NMOS switch and reducing the quiescent current of
the device to 65µA. The load current is then supplied
solely by C3 indicated by the gradually decreasing voltage at the output. When the NFB pin drops slightly below -1.23V, the enable comparator enables the device
and begins the cycle as described previously. The EN
pin can be used to turn off the AME5150 and reduce the
quiescent current to 0.1µA.
Rev.A.01
7
AME, Inc.
Micropower Inverting
DC/DC Converter
AME5150
n Typical Application
VIN
L1
10µH
C2
0.47µF
1.5V~5.5V
IN
SW
AME5150
C1
4.7µF
EN
D2
CF
D1 15pF
-15V
R2
267KΩ
NFB
GND
R1
24.9KΩ
C3
4.7µF
Figure. 4
1-cell Li-lon to -15V inverting charge pump converter
8
Rev.A.01
AME, Inc.
Micropower Inverting
DC/DC Converter
AME5150
Efficiency vs. Loading
Switch off Time vs. Temperature
80
700
VIN = 4.2V
VIN = 3.6V
650
Switch Off Time (ns)
Efficiency (%)
75
VIN = 2.7V
70
65
60
VOUT = -15V
55
600
550
500
450
400
350
1 2 3 4 5 6 7 8 9 101112 131415 16171819202122 232425 26
Load Current (mA)
300
-40
-20
0
20
40
60
80
100
80
100
Temperature (oC)
INFB vs. Temperature
IQ vs. Temperature
90
2.7
2.5
80
2.3
70
IQ (µA)
INFB (µA)
2.1
1.9
1.7
60
50
1.5
1.3
40
1.1
0.9
-40
-20
0
20
40
60
80
30
-40
100
-20
1.4
1.4
1.3
1.3
1.1
1.0
0.9
0.8
0.7
60
1.2
1.1
1.0
0.9
0.8
0.7
0.5
0.5
-20
0
20
40
60
o
Temperature ( C)
Rev.A.01
40
0.6
0.6
0.4
-40
20
EN Threshold Low vs. Temperature
1.5
EN Threshold (V)
EN Threshold (V)
EN Threshold High vs. Temperature
1.5
1.2
0
Temperature ( oC)
Temperature (oC)
80
100
0.4
-40
-20
0
20
40
60
Temperature (oC)
80
100
9
AME, Inc.
Micropower Inverting
DC/DC Converter
AME5150
RDSON vs. Temperature
VNFB vs. Temperature
1.5
1.25
1.4
1.3
1.24
1.23
1.1
VNFB (V)
RDSON (Ω)
1.2
1.22
1.0
0.9
1.21
0.8
1.20
0.7
1.19
0.6
0.5
-40
-20
0
20
40
60
80
1.18
-40
100
Temperature (oC)
0
20
40
60
80
100
Temperature (oC)
Switch Current Limit vs. Temperature
UVLO vs. Temperature
600
1.50
Switch Current Limit (mA)
1.45
1.40
1.35
UVLO (V)
-20
1.30
1.25
1.20
1.15
1.10
550
500
450
400
350
300
250
1.05
1.00
-40
-20
0
20
40
60
Temperature (oC)
10
80
100
200
-40
-20
0
20
40
60
80
100
Temperature (oC)
Rev.A.01
AME, Inc.
Micropower Inverting
DC/DC Converter
AME5150
n Date Code Rule
Marking
Date Code
Year
A
A
A
W
W
xxx0
A
A
A
W
W
xxx1
A
A
A
W
W
xxx2
A
A
A
W
W
xxx3
A
A
A
W
W
xxx4
A
A
A
W
W
xxx5
A
A
A
W
W
xxx6
A
A
A
W
W
xxx7
A
A
A
W
W
xxx8
A
A
A
W
W
xxx9
n Tape and Reel Dimension
SOT-25
P
W
AME
AME
PIN 1
Carrier Tape, Number of Components Per Reel and Reel Size
Rev.A.01
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
SOT-25
8.0±0.1 mm
4.0±0.1 mm
3000pcs
180±1 mm
11
AME, Inc.
Micropower Inverting
DC/DC Converter
AME5150
n Tape and Reel Dimension
TSOT-25
P
W
AME
AME
PIN 1
Carrier Tape, Number of Components Per Reel and Reel Size
12
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
TSOT-25
8.0±0.1 mm
4.0±0.1 mm
3000pcs
180±1 mm
Rev.A.01
AME, Inc.
Micropower Inverting
DC/DC Converter
AME5150
n Package Dimension
SOT-25
Top View
Side View
SYMBOLS
D
MILLIMETERS
MAX
MIN
MAX
L
MIN
INCHES
1.20REF
E
H
A
θ1
S1
A1
0.00
0.15
0.0000
0.0059
b
0.30
0.55
0.0118
0.0217
D
2.70
3.10
0.1063
0.1220
E
1.40
1.80
0.0551
0.0709
1.90 BSC
e
H
e
2.60
θ1
0o
3.00
0.10236 0.11811
0.0146BSC
10 o
0o
10 o
0.95BSC
0.0374BSC
MILLIMETERS
INCHES
S1
A1
A
0.07480 BSC
0.37BSC
L
Front View
0.0472REF
b
TSOT-25
Top View
Side View
SYMBOLS
MIN
MAX
MIN
MAX
A+A1
0.90
1.25
0.0354
0.0492
b
0.30
0.50
0.0118
0.0197
D
2.70
3.10
0.1063
0.1220
E
1.40
1.80
0.0551
0.0709
E
H
L
D
1.90 BSC
e
θ1
S1
H
2.40
θ1
Front View
0
o
10
0.95BSC
0.09449 0.11811
0.0138BSC
o
0o
10 o
0.0374BSC
b
Rev.A.01
A1
A
S1
3.00
0.35BSC
L
e
0.07480 BSC
13
www.ame.com.tw
E-Mail: [email protected]
Life Support Policy:
These products of AME, Inc. are not authorized for use as critical components in life-support
devices or systems, without the express written approval of the president
of AME, Inc.
AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and
advises its customers to obtain the latest version of relevant information.
 AME, Inc. , Auguest 2007
Document: 1231-DS5150-A.01
Corporate Headquarter
U.S.A.(Subsidiary)
AME, Inc.
Analog Microelectronics, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District
3100 De La Cruz Blvd., Suite 201
Taipei 114, Taiwan, R.O.C.
Tel: 886 2 2627-8687
Santa Clara, CA. 95054-2438
Tel : (408) 988-2388
Fax: 886 2 2659-2989
Fax: (408) 988-2489