|
|
PDF MAX606 Data sheet ( Hoja de datos )
| Número de pieza | MAX606 | |
| Descripción | Low-Profile / 5V/12V or Adjustable / Step-Up DC-DC Converters for Flash Memory/PCMCIA Cards | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MAX606 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
|
No Preview Available !
19-0459; Rev 1; 1/99
EVFAOLLULAOTWIOSNDKAITTAMSAHNEUEATL
Low-Profile, 5V/12V or Adjustable, Step-Up
DC-DC Converters for Flash Memory/PCMCIA Cards
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 pro-
vide a ±4% accurate output that is preset to 5V or 12V,
or adjustable from VIN 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
0.25in2 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 0.16in2, 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 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
Pin Configuration
TOP VIEW
PGND
FB
SHDN
IN
1
2
3
4
MAX606
MAX607
8 LX
7 OUT
6 SS
5 GND
SO/µMAX
____________________________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
PART
MAX606ESA
MAX606EUA
MAX607ESA
MAX607EUA
Ordering Information
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 SO
8 µMAX
8 SO
8 µMAX
Typical Operating Circuit
INPUT
+4.5V TO +5.5V
0.68µF 0.68µF 0.1µF
ON/OFF
IN
SHDN
LX
FB MAX606 OUT
GND
PGND
5µH
OUTPUT
12V @ 90mA
0.68µF
x2
________________________________________________________________ Maxim Integrated Products 1
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.
1 page  
Low-Profile, 5V/12V or Adjustable, Step-Up
DC-DC Converters for Flash Memory/PCMCIA Cards
Typical Operating Characteristics (continued)
(VIN = 3.3V, TA = +25°C, unless otherwise noted.)
MAX606
MAXIMUM OUTPUT CURRENT
vs. INDUCTOR VALUE
400
350 A
300
250 B
200
150
100
50
0
1x100
C
A: VOUT = 5V, VIN = 3.3V
B: VOUT = 12V, VIN = 5V
C: VOUT = 12V, VIN = 3.3V
INDUCTOR VALUE (µH)
1x101
MAX607
MAXIMUM OUTPUT CURRENT
vs. INDUCTOR VALUE
400
A: VOUT = 5V, VIN = 3.3V
350 B: VOUT = 12V, VIN = 5V
C: VOUT = 12V, VIN = 3.3V
300
A
250 B
200
150 C
100
50
0
1x100
INDUCTOR VALUE (µH)
1x101
20,800
1800
1600
1400
START-UP DELAY vs. SOFT START
CAPACITOR
A: MAX607 VOUT = 12V
B: MAX606 VOUT = 12V
C: MAX607 VOUT = 5V
D: MAX606 VOUT = 5V
1200
1000
800 A B
600
VIN = 3.3V
400
200
0
1x101
1x102
1x103
1x104
SOFT-START CAPACITOR (pF)
D
C
1x105
MAX606
START-UP DELAY AND INRUSH CURRENT
SHDN
2V/div
OUTPUT
5V/div
2V
12V
INPUT
200mA/div
200mA
50µs/div
ILOAD = 1mA, INPUT = 3.3V, CSS = 10nF, COUT = 2 x 0.68µF
MAX607
START-UP DELAY AND INRUSH CURRENT
SHDN
2V/div
OUTPUT
5V/div
2V
12V
400mA
INPUT
200mA/div
100µs/div
ILOAD = 1mA, INPUT = 3.3V, CSS = 10nF, COUT = 4.7µF
_______________________________________________________________________________________ 5
5 Page 
Low-Profile, 5V/12V or Adjustable, Step-Up
DC-DC Converters for Flash Memory/PCMCIA Cards
Diode Selection
The MAX606/MAX607’s high switching frequency
demands a high-speed rectifier. Use a Schottky diode
with at least a 0.5A average current rating and a 1.2A
peak current rating, such as an MBR0520L. See Table
3 for a list of component suppliers.
Capacitor Selection
Output Filter Capacitor
The output voltage ripple is a function of the output
capacitor’s equivalent series resistance (ESR) and
capacitance. For best performance, use ceramic
capacitors. Higher-ESR capacitors, such as tantalums,
will cause excessive ripple. See Table 3 for a list of
component suppliers.
The output voltage ripple is approximately 100mVp-p
for the 12V Standard Application Circuit (Figure 1) and
50mV for the 5V circuit (Figure 2). To further reduce this
ripple, or to reduce the ripple on a different application
circuit, increase the value of the output filter capacitor.
If this capacitor is low ESR (e.g., ceramic), the output
voltage ripple will be dominated by this capacitance.
Input Bypass Capacitors
For applications where the MAX606/MAX607 are physi-
cally close to the input supply’s filter capacitor (e.g., in
PCMCIA drivers from the host computer), the input
bypass capacitor may not be necessary.
In other applications where the MAX606/MAX607 are
more than a few inches away from the supply (such as
memory cards), the input bypass capacitor is needed
to reduce reflected current ripple to the supply and
improve efficiency by creating a low-impedance path
for the ripple current. Under these circumstances, the
associated high Q and low ESR of ceramic capacitors
do not diminish the problem. Therefore, include some
low-Q, moderate-ESR capacitance (e.g., tantalum) at
the input in order to reduce ringing.
Layout
The MAX606/MAX607’s high-frequency operation and
high peak currents make PC board layout critical to
minimize ground bounce and noise. Locate input
bypass and output filter capacitors as close to the
device pins as possible. All connections to OUT (and to
FB when operating in adjustable-output mode) should
also be kept as short as possible. A ground plane is
recommended. Solder GND and PGND directly to the
ground plane. Refer to the MAX606/MAX607 evaluation
kit manual for a suggested surface-mount layout.
___________________Chip Topography
PGND
PGND
LX
LX
PGND
SEL
SHDN
V+
0.058"
(1.473mm)
TRANSISTOR COUNT: 613
SUBSTRATE CONNECTED TO GND
LX
0.084"
(2.134mm)
OUT
SS
GND
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX606.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MAX600 | (MAX600 - MAX602) AC to DC Regulator |  Maxim Integrated Products |
| MAX6001 | Low-Cost / Low-Power / Low-Dropout / SOT23-3 Voltage References | Maxim Integrated |
| MAX6001EUR-T | Low-Cost / Low-Power / Low-Dropout / SOT23-3 Voltage References | Maxim Integrated |
| MAX6002 | Low-Cost / Low-Power / Low-Dropout / SOT23-3 Voltage References | Maxim Integrated |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |