AKM AME7720BEEV500Z Step-up/step-down 60ma regulated charge pump Datasheet

AME, Inc.
AME7720 / 7721
n General Description
The AME7720 / 7721 is switched-capactitor voltage
doublers that delivers a regulated output. No external inductor is required for operation. Using three small capacitors, the AME7720 / 7721 can deliver up to 60mA to
the voltage regulated output. The AME7720 / 7721 features very low output pipple and high efficiency over a
large portion of its load range making this device ideal for
battery-powered applications. Furthermore, the combination of few external components and small package
size keeps the total converter board area to a minimum
in space restricted applications.
The AME7720 / 7721 contains a thermal management
circuit to protect the device under continuous output short
circuit conditions.
Step-Up/Step-Down
60mA Regulated Charge Pump
n Applications
l Cellular Phone
l Digital Camera
l PDAs LCD display
l LED/Display Back Light Driver
l Smart Card Reader
l SIM Card Supply
l PCMCIA Card
l LCD Display
n Functional Block Diagram
AME7720
C-
VIN
C+
The AME7720 / 7721 is available in SOT-25 / SOT-26
package and is rated from -40OC to 85OC.
φ2
φ1
n Features
φ1
φ2
VOUT
l Input Voltage Range:
5V Version: 2.7V to 5.5V
φ1
φ2
EN
EA
Control
3.3V Version: 1.8V to 5.5V
l Accurate to with ±5%
l Output Current:
5V Version: 60mA with VIN>=3.0V
GND
3.3V Version: 60mA with VIN >=2.2V
AME7721
l 1MHZ Switching Frequency
l Shutdown Mode < 1µA (AME7720)
l Short Circuit Protection:Typ. 80mA
l Over Temperature Protection
C-
VIN
C+
φ2
φ1
φ1
φ2
l All AME’ s Lead Free Product Meet RoHS
Standards
V OUT
φ1
φ2
Control
EA
GND
1
AME, Inc.
Step-Up/Step-Down
60mA Regulated Charge Pump
AME7720 / 7721
n Typical Application
AME7720
VOUT
C+
CPUMP = 0.22µF
3.0V to 5.5V
VIN
C IN=2.2µF
VIN
AME
7720
5V / 60mA
VOUT
C OUT =2.2µF
GND
C-
EN
ON OFF
AME7721
C+
VOUT
CPUMP = 0.22µF
3.0V to 5.5V
VIN
VIN
CC IN=2.2µF
2
AME
7721
5V / 60mA
VOUT
C OUT =2.2µF
GND
AME, Inc.
Step-Up/Step-Down
60mA Regulated Charge Pump
AME7720 / 7721
n Pin Configuration
SOT-26
Top View
6
5
SOT-25
Top View
4
AME7720
AME7720BEEY
5
4
1. VOUT
1. VOUT
2. GND
2. GND
AME7721
3. C4. VIN
2
3
3. C4. VIN
5. C+
1
AME7721BEEV
5. C+
1
6. EN
2
3
* Die Attach:
* Die Attach:
Conductive Epoxy
Conductive Epoxy
n Pin Description
Pin Number
Pin Name
Pin Description
1
VOUT
Regulator output pin.
VOUT should be bypassed with a 2.2µF low ESR ceramic capacitor.
2
2
GND
Ground pin connection.
3
3
C-
Pump capacitor negative terminal.
4
4
VIN
Input supply pin.
VIN should be bypassed with a 2.2µF low ESR ceramic capacitor.
5
5
C+
Pump capacitor positive terminal.
6
N/A
EN
Shutdown input.
Active Low disable the regulator.
AME7720
AME7721
1
3
AME, Inc.
Step-Up/Step-Down
60mA Regulated Charge Pump
AME7720 / 7721
n Ordering Information
AME7720/7721 x x x x xxx x
Special Feature
Voltage
Number of Pins
Package Type
Operating Ambient Temperature Range
Pin Configuration
Pin
Configuration
AME7720
B
(SOT-26)
Operating Ambient
Temperature Range
Package
Type
Number of
Pins
E: -40OC to 85OC
E: SOT-2X
V: 5
Y: 6
1. VOUT
2. GND
3. C4. VIN
5. C+
6. EN
Voltage
500: V=5V
Special Feature
Y: Lead free & Low profile
Z: Lead free
AME7721
B
(SOT-25)
1. VOUT
2. GND
3. C4. VIN
5. C+
n Ordering Information
Part Number
Marking*
Output Voltage
Package
Operating Ambient
Temperature Range
AME7720BEEY500Z
BECww
5V
SOT-26
- 40oC to + 85oC
AME7720BEEY500Y
BECww
5V
TSOT-26
- 40oC to + 85oC
AME7721BEEV500Z
BEGww
5V
SOT-25
- 40oC to + 85oC
AME7721BEEV500Y
BEGww
5V
TSOT-25
- 40oC to + 85oC
Note: ww represents the date code and pls refer to Date Code Rule before Package Dimension.
* A line on top of the first letter represents lead free plating such as BECww.
Please consult AME sales office or authorized Rep./Distributor for the availability of package type.
4
AME, Inc.
Step-Up/Step-Down
60mA Regulated Charge Pump
AME7720 / 7721
n Absolute Maximum Ratings
Parameter
Maximum
Unit
Input Voltage
5.5
V
ESD Classification
C*
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device.
* HBM C:4000V+
n Recommended Operating Conditions
Parameter
Symbol
Rating
Unit
Ambient Temperature Range
TA
- 40 to + 85
o
Junction Temperature Range
TJ
- 40 to + 125
o
C
C
n Thermal Information
Parameter
Thermal Resistance*
(Junction to Case)
Package
Die Attach
SOT-26
Conductive Epoxy
SOT-25
Conductive Epoxy
Symbol
Maximum
θJC
81
Unit
o
C/W
Thermal Resistance
(Junction to Ambient)
SOT-26
Conductive Epoxy
SOT-25
Conductive Epoxy
SOT-26
Conductive Epoxy
SOT-25
Conductive Epoxy
Internal Power Dissipation
θJA
260
PD
400
Maximum Junction Temperature
150
Solder Iron (10Sec)**
350
mW
o
C
* Measure θJC on center of molding compound if IC has no tab.
** MIL-STD-202G 210F
5
AME, Inc.
Step-Up/Step-Down
60mA Regulated Charge Pump
AME7720 / 7721
n Electrical Specifications(AME7720)
TA=-40OC to +85OC, VIN = VOUT/2+0.75V, IOUT = 5mA , CIN = COUT=2.2µF , CPUMP = 0.22 µF, V EN =1.3V
Typical Values are at TA=25OC.
Parameter
Input Voltage
Symbol
VIN
Test Conditions
Min
VOUT = 5V
2.7
5.5
VOUT = 3.3V
1.8
5.5
IOUT <= 15mA, 2.7V < VIN < 5.5V
Output Voltage
VOUT
IOUT <= 60mA, 3.0V < VIN < 5.5V
IOUT <= 15mA, 1.8V < VIN < 5.5V
IOUT <= 60mA, 2.2V < VIN < 5.5V
4.75
Quiescent Current
IQ
1.8V < VIN < 5.5V,
EN = GND
IOUT
VOUT = 5V
Short Circuit Current Limit
ISC
VOUT = GND
VRIPPLE
3.14
Efficiency
η
Frequency
fOSC
EN Input Threshold High
VIH
EN Input Threshold Low
VIL
EN Input Current High
IIH
EN Input Current Low
IIL
VOUT Turn-on time
tON
VIN = 2.7V
V
3.46
60
100
µA
0.01
0.1
60
TA=25oC
Oscillator Free
Running
mA
80
mA
50
mVp-p
90
%
1.0
MHz
1.3
V
0.6
V
EN = VIN
0.1
µA
EN = GND
0.1
µA
VIN = 3V,
IOUT = 60mA
TA=25oC
0.15
Over Temperature Shutdown
OTS
160
Over Temperature Hysterisis
OTH
20
Note 1: Effective series resistance (ESR) of capacitors is < 0.1Ω.
6
3.3
o
VIN = 3V,
IOUT = 60mA
IOUT = 15mA,
Units
5.25
TA=-40~+85 C
Output Current
Ripple Voltage1
5
Max
V
1.8V < VIN < 5.5V,
IOUT = 0mA
Typ
ms
o
C
AME, Inc.
Step-Up/Step-Down
60mA Regulated Charge Pump
AME7720 / 7721
n Electrical Specifications(AME7721)
TA=-40OC to +85OC, VIN = VOUT/2+0.75V, IOUT = 5mA CIN = 2.2µF , CPUMP = 0.22 µF
Typical Values are at TA=25OC
Parameter
Input Voltage
Symbol
VIN
Test Conditions
Min
VOUT = 5V
2.7
5.5
VOUT = 3.3V
1.8
5.5
IOUT <= 15mA, 2.7V < VIN < 5.5V
Output Voltage
VOUT
IOUT <= 60mA, 3.0V < VIN < 5.5V
IOUT <= 15mA, 1.8V < VIN < 5.5V
IOUT <= 60mA, 2.2V < VIN < 5.5V
Quiescent Current
IQ
1.8V < VIN < 5V,
IOUT=0mA
IOUT
VOUT = 5V
Short Circuit Current Limit
ISC
VOUT = GND
VRIPPLE
Efficiency
η
Frequency
fOSC
VOUT Turn-on time
tON
VIN = 2.7V
TA=25oC
Oscillator Free
Running
VIN = 3V,
IOUT = 60mA
3.14
TA=25oC
Units
V
5.25
3.3
3.46
60
100
60
VIN = 3V,
IOUT = 60mA
IOUT = 15mA,
5
Max
V
TA=-40~+85oC
Output Current
Ripple Voltage1
4.75
Typ
µA
mA
80
mA
50
mVp-p
90
%
1.0
MHz
0.15
ms
Over Temperature Shutdown
OTS
160
Over Temperature Hysterisis
OTH
20
o
C
Note 1: Effective series resistance (ESR) of capacitors is < 0.1Ω.
7
AME, Inc.
AME7720 / 7721
Step-Up/Step-Down
60mA Regulated Charge Pump
n Detailed Description
n Efficiency
The AME7720 / 7721 regulated charge pump provides a
regulated output voltages ranging from less than the output
to greater than the output. This is accomplshed by automatic mode switching within the device.
The efficiency of the charge pump regulator varies
with the output voltage version, the applied input voltage, the load current, and the internal operation mode
of the device.
n Short Circuit and Thermal
Protection
The AME7720 / 7721 has a thermal protection and shutdown circuit that continuously monitors the IC junction temperature. If the thermal protection circuit senses the die
temperature exceeding approximately 160OC, the thermal
shutdown will disable the charge pump switching cycle operation, The thermal limit system has 20OC of system hysteresis before the charge pump can reset. Once the over
current event is removed from the output and the junction
temperature drops below 140OC, the charge pump will the
become active again. The thermal protection system will
cycle on and off if an output short circuit condition persists.
This will allow the AME7720 / 7721 to operate indefinitely a
short circuit condition without damage to the device.
n Shutdown Mode
A control pin on the regulator can be used to place the
device into an energy-saving shutdown mode. In this mode,
the output is disconnected from the input as long as VIN is
greater than or equal to minimum VIN and input quiescent
current is reduced to 1µA maximum.
n Capacitor Selection
For minimum output voltage ripple, the output capacitor
COUT should be a ceramic, surface-mount type. Tantalum
capacitors generally have a higher Effective Series Resistance (ESR) and may contribute to higher output voltage
ripple. Leaded capacitors also increase ripple due to the
higher inductance of the package itself. To achieve best
operation with low input voltage and high load current, the
input and pump capacitors (CIN, CPUMP respecvively) should
also be surface-mount ceramic types. In all cases, X7R or
X5R dielectric are recommended.
With light loads or higher input voltage, a smaller
0.1µF pump capacitor (CPUMP) and smaller 1µF input
and output capacitor (CIN and COUT, respectively) can
be used. To minimize output voltage ripple, increase
the output capacitor, COUT, to 10µF or larger.
8
The approximate efficiency is given by:
5V Version (V IN<= VOUT)
Efficiency (%) = VOUT / 2V IN ． 100
3.3V Version (V IN> VOUT)
Efficiency (%) = VOUT / VIN ． 100
n Layout
Large ripple currents flow in the V IN and V OUT traces.
To minimized both input and output ripple, keep the
capacitors as close as possible to the regulator using
short, direct circuit traces.
The trace lengths from the input and output capacitors have been kept as short as possible. A star ground
system has been implemented, with GND pin as the
center of the star. No ground plane is provided in other
layers, as this will provide capacitive coupling for noise
spikes.
AME, Inc.
Step-Up/Step-Down
60mA Regulated Charge Pump
AME7720 / 7721
Efficiency vs. VIN
Short-Circuit Load Current vs VIN
90
225
80
200
70
L oad Curren t (mA)
250
Efficien cy (%)
100
V OUT=5V
60
50
40
30
175
150
125
100
75
20
50
10
25
0
1.5
0
2
2.5
2.7
3
3.5
4
4.5
5
5.5
2
2.5
3
3.5
4
4.5
5
5.5
VIN (V)
VIN (V)
Shutdown Supply Current vs Temperature
Maximum Load Current vs Input Voltage
120
20
18
Maximum L oad Current (mA)
Shutdown Supply Current (nA)
1.5
EN=Low
16
14
12
10
8
6
4
2
0
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
110
TA <=85 oC
100
90
80
70
60
50
40
30
20
10
0
1.5
90
2
2.5
2.7
3
3.5
3.6
4
4.5
5
5.5
VI N (V)
o
Temperature ( C)
Efficiency vs Load Current
Quiescent Current vs Temperature
(No Load)
90
100
VIN=2.7V
Quiescen t Current (uA)
80
VIN =3.0V
Efficiency (%)
70
60
50
V IN =5.0V
40
30
20
10
80
IOUT=0mA
60
40
20
For V OUT=5V only
0
0
0
1
10
Load Current (mA)
100
-40
-20
25
Temperature (oC)
55
85
9
AME, Inc.
Step-Up/Step-Down
60mA Regulated Charge Pump
AME7720 / 7721
Load Transient Response
Output Ripple Voltage vs VIN
50mA/div
250
IO=5mA
COUT =2.2µF
150
ILOAD
20m A/div
Ripple (mVp-p)
200
100
VOUT
AME7720BEEY
50
0
1.5
2
2.5
2.7
3
3.5
4
4.5
5
5.5
10µs/div
VIN (V)
Output Voltage vs Temperature
O utpu t Voltag e Ch an ge (%)
0.6
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
-40
-20
0
20
40
60
80
100
120
140
Junction Temperature (oC)
120mA/div
Input Current at Turn-On
II N
2V/div
VOUT
VIN=3V,IOUT=60mA
BW=20MHz
2ms/div
10
AME, Inc.
Step-Up/Step-Down
60mA Regulated Charge Pump
AME7720 / 7721
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 & Reel Dimension
SOT-26
P
W
AME
AME
PIN 1
Carrier Tape, Number of Components Per Reel and Reel Size
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
SOT-26
8.0±0.1 mm
4.0±0.1 mm
3000pcs
180±1 mm
11
AME, Inc.
Step-Up/Step-Down
60mA Regulated Charge Pump
AME7720 / 7721
n Tape & Reel Dimension
TSOT-26
P
W
AME
AME
PIN 1
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
TSOT-26
8.0±0.1 mm
4.0±0.1 mm
3000pcs
180±1 mm
SOT-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
SOT-25
8.0±0.1 mm
4.0±0.1 mm
3000pcs
180±1 mm
AME, Inc.
Step-Up/Step-Down
60mA Regulated Charge Pump
AME7720 / 7721
n Tape and Reel Dimension
TSOT-25
P
W
AME
AME
PIN 1
Carrier Tape, Number of Components Per Reel and Reel Size
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
13
AME, Inc.
Step-Up/Step-Down
60mA Regulated Charge Pump
AME7720 / 7721
n Package Dimension
SOT-25
Top View
Side View
SYMBOLS
MIN
D
L
A
E
H
MILLIMETERS
0.0472REF
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
L
?1
Front View
MAX
0.00
H
e
1.20REF
MIN
A1
e
θ1
S1
MAX
INCHES
2.60
3.00
0.37BSC
0o
10o
0.07480 BSC
0.10236 0.11811
0.0146BSC
0o
10o
0.95BSC
0.0374BSC
MILLIMETERS
INCHES
A1
A
S1
1.90 BSC
b
SOT-26
Top View
Side View
SYMBOLS
MIN
L
D
e
E
H
A
θ1
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
L
A
A1
S1
14
0.0472REF
0.15
?1
b
MAX
0.00
H
Front View
1.20REF
MIN
A1
e
S1
MAX
1.90 BSC
2.60
3.00
0.37REF
0o
10o
0.95REF
0.0748 BSC
0.10236 0.11811
0.0146REF
0o
10o
0.0374REF
AME, Inc.
Step-Up/Step-Down
60mA Regulated Charge Pump
AME7720 / 7721
n Package Dimension
TSOT-25
Top View
Side View
D
SYMBOLS
MAX
MIN
MAX
A+A1
1.00
1.30
0.0394
0.0512
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
?1
3.00
0
o
10
0.10236 0.11811
0.0146BSC
o
0o
10o
0.95BSC
0.0374BSC
MILLIMETERS
INCHES
A1
A
S1
0.07480 BSC
0.37BSC
L
Front View
INCHES
MIN
L
H
E
θ1
S1
MILLIMETERS
b
TSOT-26
Top View
Side View
L
E
θ1
SYMBOLS
MIN
MAX
MIN
MAX
A+A1
1.00
1.30
0.0394
0.0512
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
e
S1
H
L
Front View
A
?1
S1
1.90 BSC
2.60
3.00
0.37REF
0o
10o
0.95REF
0.0748 BSC
0.10236 0.11811
0.0146REF
0o
10o
0.0374REF
A1
H
D
e
b
15
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. , March 2006
Document: 1121-DS7720/7721-A.02
Corporate Headquarter
U.S.A. (Subsidiary)
AME, Inc.
Analog Microelectronics, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District
Taipei 114, Taiwan, R.O.C.
Tel: 886 2 2627-8687
Fax: 886 2 2659-2989
3100 De La Cruz Blvd., Suite 201
Santa Clara, CA. 95054-2046
Tel : (408) 988-2388
Fax: (408) 988-2489