Rainbow Electronics MAX607 User Manual

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 0.25in2, 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 pro­vide a ±4% accurate output that is preset to 5V or 12V,
or adjustable from VINto 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

0.25in2and 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 0.16in2, 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 fea­tures include 1µA logic-controlled shutdown and user­controlled 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

♦ Lowest-Height Circuit (1.35mm max)
♦ ±4% Regulated Output (5V, 12V, or Adjustable)
♦ Up to 180mA Load Current
♦ 1MHz Switching Frequency (MAX606)
♦ 1µA Logic-Controlled Shutdown
♦ 3V to 5.5V Input Voltage Range
♦ 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/µMAX

TOP VIEW

Pin Configuration

0.68µF 0.68µF

0.68µF
x 2

0.1µF

5µH

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 [phone].
For small orders, phone [phone].

MAX607EUA -40°C to +85°C 8 µMAX

MAX607ESA -40°C to +85°C 8 SO

MAX606EUA -40°C to +85°C 8 µMAX

MAX606ESA -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

(VIN= 3.3V, GND = PGND = FB = 0V, SHDN = IN, TA= 0°C to +85°C, unless otherwise noted. Typical values are at TA= +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

VIN= 3V to 5.5V. For VFBbelow this voltage,
output regulates to 12V.

V

SHDN

= 0 or V

IN

3V < VIN< 5V, FB = IN, I

LOAD

= 0 to 180mA

VIN= 5.5V

VIN= 3V

2V < (V

OUT

+ 0.5V - VIN) < 8V (see

Pulse-

Frequency-Modulation Control Scheme

section)

3V < VIN< 5.5V
(tON= K / VIN)

V

OUT

= 13V

V

SHDN

= VIN, VSS= 150mV

V

SHDN

= 0, OUT = IN

VLX= 12V

4.5V < VIN< 5.5V, FB = GND, I

LOAD

= 0 to 120mA

0.1V < VFB< (VIN- 0.1V)

0.1V < VFB< (VIN- 0.1V)

V

OUT

= 13V

VIN= 3V to 5.5V

V

SHDN

= VSS= 0

CONDITIONS

V0.1FB Input Low Voltage

µA±1

SHDN Input Current

V0.66V

IN

SHDN Input High Voltage

V0.25V

IN

SHDN Input Low Voltage

0.3 0.7Switch Off-Time Ratio

3.8 6.0 8.6

µs-A

1.9 3.0 4.3

Switch On-Time Constant (K)

µA80OUT Input Current

µA0.01 10Shutdown Quiescent Current

150 300

µA

250 500

Quiescent Supply Current

0.5

V

4.8 5.0 5.2

Output Voltage (Note 1)

V2.4 2.8

V3.0 5.5Supply Voltage

Undervoltage Lockout Threshold

kΩ

30 45 60

SS Resistance

A0.7 1.1Switch Current Limit

µA10Switch Off-Leakage

Ω

0.4 1Switch On-Resistance

11.5 12.0 12.5
V1.96 2.00 2.04FB Regulation Setpoint
VV

IN

12.5Adjustable Output Voltage Range
%0.5Line Regulation

UNITSMIN TYP MAXPARAMETER

VIN= 3V to 5.5V. For VFBabove this voltage,
output regulates to 5V.

VVIN- 0.1FB Input High Voltage

VFB= 2.05V, V

OUT

= 13V nA200FB 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

(VIN= 3.3V, GND = PGND = FB = 0V, SHDN = IN, TA= -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.

VIN= 3V to 5.5V. For VFBbelow this voltage,
output regulates to 12V.

V

SHDN

= 0 or V

IN

3V < VIN< 5V, FB = IN, I

LOAD

= 0 to 135mA

VIN= 5.5V

VIN= 3V

2V < (V

OUT

+ 0.5V - VIN) < 8V (see

Pulse-

Frequency-Modulation Control Scheme

section)

3V < VIN< 5.5V
(tON= K / VIN)

V

OUT

= 13V

V

SHDN

= VIN, VSS= 150mV

V

SHDN

= 0, OUT = IN

MAX606

VLX= 12V

4.5V < VIN< 5.5V, FB = GND, I

LOAD

= 0 to 90mA

0.1V < VFB< (VIN- 0.1V)

0.1V < VFB< (VIN- 0.1V)

V

OUT

= 13V

V

SHDN

= VSS= 0

CONDITIONS

MAX606

V0.1

MAX607

FB Input Low Voltage

µA±1

MAX607

SHDN Input Current

V0.66V

IN

SHDN Input High Voltage

V0.25V

IN

SHDN Input Low Voltage

0.3 0.7Switch Off-Time Ratio

3.5 9.0

µs-V

1.8 4.5

Switch On-Time Constant (K)

µA85OUT Input Current

µA10Shutdown Quiescent Current

300

µA

500

Quiescent Supply Current

0.5

V

4.75 5.25

Output Voltage (Note 1)

V2.4 2.8

V3.0 5.5Supply Voltage

Undervoltage Lockout Threshold

kΩ

30 60

SS Resistance

A0.55 1.25Switch Current Limit

µA10Switch Off-Leakage

Ω

1Switch On-Resistance

11.4 12.6
V1.94 2.06FB Regulation Setpoint
VV

IN

12.5Adjustable Output Voltage Range

UNITSMIN TYP MAXPARAMETER

VIN= 3V to 5.5V. For VFBabove this voltage,
output regulates to 5V.

VVIN- 0.1FB Input High Voltage

VFB= 2.05V, V

OUT

= 13V nA200FB Input Current

MAX606/MAX607

Low-Profile, 5V/12V or Adjustable, Step-Up
DC-DC Converters for Flash Memory/PCMCIA Cards

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VIN= 3.3V, TA= +25°C, unless otherwise noted.)

0

200

100

400

300

600

500

700

2.0 3.0 3.52.5 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 10000.1 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, VIN = 3.3V

B: V

OUT

= 5V, VIN = 3.3V

C: V

OUT

= 12V, VIN = 5V

D: V

OUT

= 5V, VIN = 5V

CIN = 2 x 1µF
C

OUT

= 4.7µF

A

C

B

D

0

0.01 1 100 10000.1 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, VIN = 3.3V

B: V

OUT

= 5V, VIN = 3.3V

C: V

OUT

= 12V, VIN = 5V

D: V

OUT

= 5V, VIN = 5V

CIN = 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

(µA)

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 VIN = 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 5.53.0 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

468103 5 7 9 11 12

A: MAX607, VIN = 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 (µA)

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

VIN = 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 (µA)

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

VIN = 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 (µA)

040

1

60

80

MBR0520L

MBR0530

MBR0540

V

OUT

= V

ANODE

= 12V