General Description
The MAX606/MAX607 are the smallest CMOS, step-up
DC-DC converters available for flash memory and PC
(PCMCIA) cards. They switch at up to 1MHz, permitting
the entire circuit to fit in 0.25in
2
, yet remain under
1.35mm high to fit Type 1, 2, and 3 card standards.
These devices operate from a 3V to 5.5V input and pro-
vide a ±4% accurate output that is preset to 5V or 12V,
or adjustable from V
IN
to 12.5V. They can provide up to
180mA of output current at 5V.
The MAX606 switches at up to 1MHz and fits Type 1
(thinnest standard) flash memory and PCMCIA cards. It
uses a thin, 1.19mm high, 5µH inductor and small,
0.68µF output capacitors. The entire circuit fits in
0.25in
2
and is less than 1.35mm high.
The MAX607 switches at up to 500kHz, fitting Type 2
and 3 cards, as well as hand-held devices where
height requirements are not as critical. It uses less
board area than the MAX606, fitting in 0.16in
2
, but
requires 2.5mm of height. It also has a lower no-load
supply current than the MAX606.
Both devices use a unique control scheme that optimizes
efficiency over all input and output voltages. Other fea-
tures include 1µA logic-controlled shutdown and user-
controlled soft-start to minimize inrush currents.
The MAX606/MAX607 come in 8-pin µMAX and SO
packages. The µMAX package uses half the board
area of a standard 8-pin SO and has a maximum height
of just 1.11mm.
________________________Applications
PCMCIA Cards
Memory Cards
Single PCMCIA Slot Programming
Digital Cameras
Flash Memory Programming
Hand-Held Equipment
____________________________Features
o
Lowest-Height Circuit (1.35mm max)
o
±4% Regulated Output (5V, 12V, or Adjustable)
o
Up to 180mA Load Current
o
1MHz Switching Frequency (MAX606)
o
1µA Logic-Controlled Shutdown
o
3V to 5.5V Input Voltage Range
o
Compact 8-Pin µMAX Package
MAX606/MAX607
Low-Profile, 5V/12V or Adjustable, Step-Up
DC-DC Converters for Flash Memory/PCMCIA Cards
________________________________________________________________
Maxim Integrated Products
1
1
2
3
4
8
7
6
5
LX
OUT
SS
GND
PGND
FB
SHDN
IN
MAX606
MAX607
SO/
µ
MAX
TOP VIEW
Pin Configuration
0.68
µ
F
0.68
µ
F
0.68
µ
F
x 2
0.1
µ
F
5
µ
H
MAX606
LX
OUT
SHDN
FB
GND
PGND
IN
ON/OFF
OUTPUT
12V @ 90mA
INPUT
+4.5V TO +5.5V
Typical Operating Circuit
19-0459; Rev 1; 1/99
EVALUATION KIT MANUAL
FOLLOWS DATA SHEET
Ordering Information
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
MAX607EUA
-40°C to +85°C
8 µMAX
MAX607
ESA
-40°C to +85°C
8 SO
MAX606EUA
-40°C to +85°C
8 µMAX
MAX606
ESA
-40°C to +85°C
8 SO
PART
TEMP. RANGE
PIN-PACKAGE
MAX606/MAX607
Low-Profile, 5V/12V or Adjustable, Step-Up
DC-DC Converters for Flash Memory/PCMCIA Cards
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= 3.3V, GND = PGND = FB = 0V, SHDN = IN,
T
A
= 0°C to +85°C,
unless otherwise noted. Typical values are at T
A
= +25°C.)
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN to GND .................................................................-0.3V to +6V
LX, OUT to GND .....................................................-0.3V to +15V
PGND to GND.....................................................................±0.3V
FB to GND ..................................................-0.3V to (V
CC
+ 0.3V)
SS, SHDN to GND ....................................................-0.3V to +6V
Continuous Power Dissipation (T
A
= +70°C)
µMAX (derate 4.10mW/°C above +70°C) ....................330mW
SO (derate 5.88mW/°C above +70°C) .........................471mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature .......................................................+160°C
Lead Temperature (soldering, 10sec) .............................+300°C
V
IN
= 3V to 5.5V. For V
FB
below this voltage,
output regulates to 12V.
V
SHDN
= 0 or V
IN
3V < V
IN
< 5V, FB = IN, I
LOAD
= 0 to 180mA
V
IN
= 5.5V
V
IN
= 3V
2V < (V
OUT
+ 0.5V - V
IN
) < 8V (see
Pulse-
Frequency-Modulation Control Scheme section)
3V < V
IN
< 5.5V
(t
ON
= K / V
IN
)
V
OUT
= 13V
V
SHDN
= V
IN
, V
SS
= 150mV
V
SHDN
= 0, OUT = IN
V
LX
= 12V
4.5V < V
IN
< 5.5V, FB = GND, I
LOAD
= 0 to 120mA
0.1V < V
FB
< (V
IN
- 0.1V)
0.1V < V
FB
< (V
IN
- 0.1V)
V
OUT
= 13V
V
IN
= 3V to 5.5V
V
SHDN
= V
SS
= 0
CONDITIONS
V
0.1
FB Input Low Voltage
µA
±1
SHDN Input Current
V
0.66V
IN
SHDN Input High Voltage
V
0.25V
IN
SHDN Input Low Voltage
0.3
0.7
Switch Off-Time Ratio
3.8
6.0
8.6
µs-A
1.9
3.0
4.3
Switch On-Time Constant (K)
µA
80
OUT Input Current
µA
0.01
10
Shutdown Quiescent Current
150
300
µA
250
500
Quiescent Supply Current
0.5
V
4.8
5.0
5.2
Output Voltage (Note 1)
V
2.4
2.8
V
3.0
5.5
Supply Voltage
Undervoltage Lockout Threshold
k
30
45
60
SS Resistance
A
0.7
1.1
Switch Current Limit
µA
10
Switch Off-Leakage
0.4
1
Switch On-Resistance
11.5
12.0
12.5
V
1.96
2.00
2.04
FB Regulation Setpoint
V
V
IN
12.5
Adjustable Output Voltage Range
%
0.5
Line Regulation
UNITS
MIN
TYP
MAX
PARAMETER
V
IN
= 3V to 5.5V. For V
FB
above this voltage,
output regulates to 5V.
V
V
IN
- 0.1
FB Input High Voltage
V
FB
= 2.05V, V
OUT
= 13V
nA
200
FB Input Current
MAX606
MAX607
MAX606
MAX607
MAX606/MAX607
Low-Profile, 5V/12V or Adjustable, Step-Up
DC-DC Converters for Flash Memory/PCMCIA Cards
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS
(V
IN
= 3.3V, GND = PGND = FB = 0V, SHDN = IN,
T
A
= -40°C to +85°C
, unless otherwise noted.) (Note 2)
Note 1:
The load specification is guaranteed by DC parametric tests and is not production tested in circuit.
Note 2:
Specifications to -40°C are guaranteed by design, not production tested.
V
IN
= 3V to 5.5V. For V
FB
below this voltage,
output regulates to 12V.
V
SHDN
= 0 or V
IN
3V < V
IN
< 5V, FB = IN, I
LOAD
= 0 to 135mA
V
IN
= 5.5V
V
IN
= 3V
2V < (V
OUT
+ 0.5V - V
IN
) < 8V (see
Pulse-
Frequency-Modulation Control Scheme section)
3V < V
IN
< 5.5V
(t
ON
= K / V
IN
)
V
OUT
= 13V
V
SHDN
= V
IN
, V
SS
= 150mV
V
SHDN
= 0, OUT = IN
MAX606
V
LX
= 12V
4.5V < V
IN
< 5.5V, FB = GND, I
LOAD
= 0 to 90mA
0.1V < V
FB
< (V
IN
- 0.1V)
0.1V < V
FB
< (V
IN
- 0.1V)
V
OUT
= 13V
V
SHDN
= V
SS
= 0
CONDITIONS
MAX606
V
0.1
MAX607
FB Input Low Voltage
µA
±1
MAX607
SHDN Input Current
V
0.66V
IN
SHDN Input High Voltage
V
0.25V
IN
SHDN Input Low Voltage
0.3
0.7
Switch Off-Time Ratio
3.5
9.0
µs-V
1.8
4.5
Switch On-Time Constant (K)
µA
85
OUT Input Current
µA
10
Shutdown Quiescent Current
300
µA
500
Quiescent Supply Current
0.5
V
4.75
5.25
Output Voltage (Note 1)
V
2.4
2.8
V
3.0
5.5
Supply Voltage
Undervoltage Lockout Threshold
k
30
60
SS Resistance
A
0.55
1.25
Switch Current Limit
µA
10
Switch Off-Leakage
1
Switch On-Resistance
11.4
12.6
V
1.94
2.06
FB Regulation Setpoint
V
V
IN
12.5
Adjustable Output Voltage Range
UNITS
MIN
TYP
MAX
PARAMETER
V
IN
= 3V to 5.5V. For V
FB
above this voltage,
output regulates to 5V.
V
V
IN
- 0.1
FB Input High Voltage
V
FB
= 2.05V, V
OUT
= 13V
nA
200
FB Input Current
MAX606/MAX607
Low-Profile, 5V/12V or Adjustable, Step-Up
DC-DC Converters for Flash Memory/PCMCIA Cards
4
_______________________________________________________________________________________
Typical Operating Characteristics
(V
IN
= 3.3V, T
A
= +25°C, unless otherwise noted.)
0
200
100
400
300
600
500
700
2.0
3.0
3.5
2.5
4.0
4.5
5.0
5.5
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
MAX606/07toc01
INPUT VOLTAGE (V)
MAXIMUM OUTPUT CURRENT (mA)
MAX606 (V
OUT
= 5V)
MAX607 (V
OUT
= 5V)
MAX606 (V
OUT
= 12V)
MAX607 (V
OUT
= 12V)
0
0.01
1
100
1000
0.1
10
MAX606
EFFICIENCY vs. OUTPUT CURRENT
20
MAX606/7 TOC02
OUTPUT CURRENT (mA)
EFFICIENCY (%)
40
60
80
10
30
50
70
100
90
A: V
OUT
= 12V, V
IN
= 3.3V
B: V
OUT
= 5V, V
IN
= 3.3V
C: V
OUT
= 12V, V
IN
= 5V
D: V
OUT
= 5V, V
IN
= 5V
C
IN
= 2 x 1µF
C
OUT
= 4.7µF
A
C
B
D
0
0.01
1
100
1000
0.1
10
MAX607
EFFICIENCY vs. OUTPUT CURRENT
20
MAX606/7 TOC03
OUTPUT CURRENT (mA)
EFFICIENCY (%)
40
60
80
10
30
50
70
100
90
A: V
OUT
= 12V, V
IN
= 3.3V
B: V
OUT
= 5V, V
IN
= 3.3V
C: V
OUT
= 12V, V
IN
= 5V
D: V
OUT
= 5V, V
IN
= 5V
C
IN
= 2 x 1µF
C
OUT
= 4.7µF
D
B
A
C
0
-40
SHUTDOWN QUIESCENT CURRENT
vs. TEMPERATURE
MAX606/7 TOC04
TEMPERATURE (°C)
SHUTDOWN I
Q
(
µ
A)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-20
0
20
40
60
80
FOR V
IN
= 3V, 3.3V, AND 5V
5 MINUTE WAIT BEFORE MEASUREMENT
0
2.5
SWITCH ON-TIME vs.
INPUT VOLTAGE
MAX606/7 TOC-05
INPUT VOLTAGE (V)
SWITCH ON-TIME (ns)
500
1000
1500
2000
2500
3000
3.5
4.5
5.5
3.0
4.0
5.0
MAX607
MAX606
0
2
SWITCH OFF-TIME vs.
OUTPUT VOLTAGE
MAX606/7 TOC-06
OUTPUT VOLTAGE (V)
SWITCH OFF-TIME (ns)
500
1000
1500
2000
2500
3000
3500
4000
4
6
8
10
3
5
7
9
11
12
A: MAX607, V
IN
= 5V
B: MAX606, V
IN
= 5V
C: MAX607, V
IN
= 3.3V
D: MAX606, V
IN
= 3V
A
B
C
D
10,000
100
-40
-20
0
20
40
60
80
MAX607
NO-LOAD SUPPLY CURRENT
vs. TEMPERATURE
MAX606/7-08
TEMPERATURE (
°
C)
NO-LOAD SUPPLY CURRENT (
µ
A)
1000
D
B
A
A: V
OUT
= 12V, MBR0520 DIODE
B: V
OUT
= 12V, MBR0540 DIODE
C: V
OUT
= 5V, MBR0520 DIODE
D: V
OUT
= 5V, MBR0540 DIODE
C
V
IN
= 3.3V
10,000
100
-40
-20
0
20
40
60
80
MAX606
NO-LOAD SUPPLY CURRENT
vs. TEMPERATURE
MAX606/7-07
TEMPERATURE (
°
C)
NO-LOAD SUPPLY CURRENT (
µ
A)
1000
D
B
A
A: V
OUT
= 12V, MBR0520 DIODE
B: V
OUT
= 12V, MBR0540 DIODE
C: V
OUT
= 5V, MBR0520 DIODE
D: V
OUT
= 5V, MBR0540 DIODE
C
V
IN
= 3.3V
10,000
0.001
-40
-20
20
DIODE LEAKAGE CURRENT
vs. TEMPERATURE
0.1
0.01
100
10
1000
MAX606/07-09
TEMPERATURE (°C)
LEAKAGE CURRENT (
µ
A)
0
40
1
60
80
MBR0520L
MBR0530
MBR0540
V
OUT
= V
ANODE
= 12V
MAX606/MAX607
Low-Profile, 5V/12V or Adjustable, Step-Up
DC-DC Converters for Flash Memory/PCMCIA Cards
_______________________________________________________________________________________
5
400
0
1x10
0
1x10
1
MAX606
MAXIMUM OUTPUT CURRENT
vs. INDUCTOR VALUE
150
100
50
300
250
200
350
MAX606/07-10
INDUCTOR VALUE (
µ
H)
MAXIMUM OUTPUT CURRENT (mA)
A: V
OUT
= 5V, V
IN
= 3.3V
B: V
OUT
= 12V, V
IN
= 5V
C: V
OUT
= 12V, V
IN
= 3.3V
A
B
C
400
0
1x10
0
1x10
1
MAX607
MAXIMUM OUTPUT CURRENT
vs. INDUCTOR VALUE
150
100
50
300
250
200
350
MAX606/07-11
INDUCTOR VALUE (
µ
H)
MAXIMUM OUTPUT CURRENT (mA)
A: V
OUT
= 5V, V
IN
= 3.3V
B: V
OUT
= 12V, V
IN
= 5V
C: V
OUT
= 12V, V
IN
= 3.3V
A
B
C
20,800
0
1x10
1
1x10
2
1x10
3
1x10
4
1x10
5
START-UP DELAY vs. SOFT START
CAPACITOR
400
200
MAX606/07-12a
SOFT-START CAPACITOR (pF)
START-UP DELAY (
µ
s)
800
600
1200
1000
1600
1400
1800
A: MAX607 V
OUT
= 12V
B: MAX606 V
OUT
= 12V
C: MAX607 V
OUT
= 5V
D: MAX606 V
OUT
= 5V
A
B
D
C
V
IN
= 3.3V
Typical Operating Characteristics (continued)
(V
IN
= 3.3V, T
A
= +25°C, unless otherwise noted.)
I
LOAD
= 1mA, INPUT = 3.3V, C
SS
= 10nF, C
OUT
= 2 x 0.68
µ
F
MAX606
START-UP DELAY AND INRUSH CURRENT
INPUT
200mA/div
OUTPUT
5V/div
SHDN
2V/div
200mA
12V
2V
50
µ
s/div
I
LOAD
= 1mA, INPUT = 3.3V, C
SS
= 10nF, C
OUT
= 4.7
µ
F
MAX607
START-UP DELAY AND INRUSH CURRENT
INPUT
200mA/div
OUTPUT
5V/div
SHDN
2V/div
400mA
12V
2V
100
µ
s/div
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