M24308-2-13 [MAXIM]
3V to 5V Regulating Charge Pumps for SIM Cards; 3V至5V调节电荷泵，用于SIM卡
| 型号： | M24308-2-13 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | 3V to 5V Regulating Charge Pumps for SIM Cards |
| 文件： | 总8页 (文件大小：157K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1376; Rev 1; 12/98
3 V t o 5 V Re g u la t in g
Ch a rg e P u m p s fo r S IM Ca rd s
/MAX186H
Ge n e ra l De s c rip t io n
Fe a t u re s
The MAX1686 provides power for dual-voltage sub-
scriber ID module (SIM) cards in portable applications
such as GSM cellular phones. Designed to reside in the
portable unit (cellular phone handset), the 1MHz charge
pump converts a 2.7V to 4.2V input to regulated 5V out-
put. The MAX1686H has a nominal output voltage of
5.0V, while the MAX1686 is set to 4.75V to reduce SIM-
card current drain. The charge pump has only 45µA qui-
escent supply current, which reduces to 3µA when a
3V-capable SIM card is being powered and the charge
pump is disabled. An internal input/output shorting
switch provides power for 3V SIM cards.
♦ 2.7V to 4.2V Input Range
♦ 12mA min Charge-Pump Output Current
♦ 45µA Quiescent Supply Current
♦ 0.1µA Supply Current in Shutdown Mode
♦ 5.0V Regulated Charge-Pump Output (MAX1686H)
4.75V Regulated Charge-Pump Output (MAX1686)
♦ Input-Output Shorting Switch for 3V Cards
♦ Small External Components
(Uses a 0.047µF, 0.1µF, and a 2.2µF Capacitor)
The MAX1686/MAX1686H require only three external
capacitors around their space-saving, thin (1mm) 8-pin
µMAX packages.
♦ Output Driven to Ground in Shutdown Mode
♦ Super-Small 8-Pin µMAX Package
♦ Soft-Start and Short-Circuit Protection
Ap p lic a t io n s
GSM Cellular Phones
PCS Phones
Ord e rin g In fo rm a t io n
Portable POS Terminals
PART
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 µMAX
Personal Communicators
MAX1686EUA
MAX1686HEUA
8 µMAX
Typ ic a l Op e ra t in g Circ u it
P in Co n fig u ra t io n
TOP VIEW
C
X
INPUT
2.7V TO 4.2V
OUTPUT
V OR 5V/20mA
CXN
CXP
OUT
IN
IN
3/5
1
2
3
4
8
7
6
5
OUT
CXP
C
IN
C
OUT
MAX1686
MAX1686H
SHDN
IN
MAX1686
MAX1686H
SHDN
3/5
CXN
PGND
GND
µMAX
GND
PGND
________________________________________________________________ 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.
3 V t o 5 V Re g u la t in g
Ch a rg e P u m p s fo r S IM Ca rd s
ABSOLUTE MAXIMUM RATINGS
Continuous Power Dissipation (T = +70°C )
8-Pin µMAX (derate 4.1mW/°C above +70°C) .............330mW
IN, OUT, SHDN, 3/5 to GND.....................................-0.3V to +6V
CXP to GND..............................................-0.3V to (V + 0.3V)
A
OUT
Operating Temperature Range
CXN to GND ................................................-0.3V to (V + 0.3V)
IN
MAX1686EUA/MAX1686HEUA........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10sec) .............................+300°C
PGND to GND ......................................................-0.3V to + 0.3V
OUT Short Circuit to GND ..........................................Continuous
IN-to-OUT Current...............................................................50mA
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.
ELECTRICAL CHARACTERISTICS
(V = V
= 3.3V, 3/5 = GND, C = 0.22µF, C
= 10µF (see Applications Information section to use smaller capacitors),
OUT
X
IN
SHDN
T
A
= T
to T
, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
MIN
MAX
A
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Voltage Range
2.7
4.2
V
Input Undervoltage-Lockout
Threshold Voltage
0.8
1.2
45
1.6
V
/MAX186H
T
= +25°C
100
150
10
A
Charge pump enabled,
no load, 3/5 = GND
Quiescent Supply Current
Shutdown Supply Current
OUT Output Voltage
T
A
= -40°C to +85°C
µA
µA
V
3
Charge pump disabled, no load, 3/5 = IN
0.1
5
V
IN
= 3.6V, SHDN = GND
MAX1686
4.55
4.75
4.75
5.00
5.25
5.25
V
IN
= 2.7V to 4.2V,
load = 0 to 12mA
MAX1686H
V
IN
3/5 = IN
IN-to-OUT Switch On-Resistance
OUT Discharge Switch On-Resistance
OUT Short-Circuit Current
V
= V = 3.0V
2.5
80
5
Ω
Ω
IN
3/5
200
200
3/5 = GND or IN, SHDN = GND
3/5 = GND or IN
20
100
mA
V
Logic Input Low Voltage
0.5 · V 0.3 · V
IN IN
SHDN, 3/5
Logic Input High Voltage
0.7 · V 0.5 · V
V
SHDN, 3/5
IN
IN
Logic Input Leakage Current
0.1
1
µA
SHDN, 3/5 = GND or IN
T
= +25°C
800
700
1000
1200
1300
A
Charge-Pump Frequency
kHz
T
A
= -40°C to +85°C
Note 1: Electrical specifications are measured by pulse testing and are guaranteed for a junction temperature within the operating
temperature range, unless otherwise noted. Limits are 100% production tested at T = +25°C. Limits over the entire operat-
A
ing temperature range are guaranteed through correlation using Statistical Quality Control (SQC) methods and are not pro-
duction tested.
2
_______________________________________________________________________________________
3 V t o 5 V Re g u la t in g
Ch a rg e P u m p s fo r S IM Ca rd s
/MAX186H
Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s
= 10µF, V = 3.3V, T = +25°C, unless otherwise noted.)
IN
A
(See Typical Operating Circuit, C = 0.47µF, C = 0.22µF, C
IN
X
OUT
EFFICIENCY vs. INPUT VOLTAGE
(5V MODE)
EFFICIENCY vs. LOAD CURRENT
(5V MODE)
NO-LOAD INPUT CURRENT
vs. INPUT VOLTAGE (3V MODE)
90
80
70
60
50
40
30
20
10
0
1000
100
10
90
80
70
60
50
40
V = 3.3V
IN
I
= 10mA
LOAD
V = 2 .7V
IN
I
= 1mA
LOAD
V = 3.6V
IN
30
20
10
1
0
0.1
0
1
2
3
4
5
6
0
1
2
3
4
5
6
0.1
1
10
100
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
LOAD CURRENT (mA)
OUTPUT VOLTAGE
vs. LOAD CURRENT (3V MODE)
MAX1686 OUTPUT VOLTAGE
vs. LOAD CURRENT (5V MODE)
NO-LOAD INPUT CURRENT
vs. INPUT VOLTAGE (5V MODE)
4.80
4.79
4.78
4.77
4.76
4.75
4.74
4.73
4.72
4.71
4.70
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
10,000
1000
100
V = 3.6V
IN
V = 3 .3V
IN
V = 2.7V
IN
10
1
0
5
10
15
20
25
0
1
2
3
4
5
6
0.1
1
10
100
LOAD CURRENT (mA)
INPUT VOLTAGE (V)
LOAD CURRENT (mA)
OUTPUT VOLTAGE
OUTPUT VOLTAGE
OUTPUT WAVEFORM
vs. INPUT VOLTAGE (5V MODE)
vs. INPUT VOLTAGE (3V MODE)
(I
LOAD
= 10mA)
6
5
4
3
2
1
0
6
NO LOAD
NO LOAD
MAX1686H
MAX1686
5
4
3
2
1
0
V
OUT
(20mV/div)
0
1
2
3
4
5
6
0
1
2
3
4
5
6
2.5µs/div
5V MODE, AC COUPLED,
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
C
OUT
= 10µF 0.1µF
_______________________________________________________________________________________
3
3 V t o 5 V Re g u la t in g
Ch a rg e P u m p s fo r S IM Ca rd s
Typ ic a l Op e ra t in g Ch a ra c t e ris t ic s (c o n t in u e d )
(See Typical Operating Circuit, C = 0.47µF, C = 0.22µF, C
= 10µF, V = 3.3V, T = +25°C, unless otherwise noted.)
IN
A
IN
X
OUT
OUTPUT WAVEFORM
(I = 1mA)
LINE-TRANSIENT RESPONSE
LOAD-TRANSIENT RESPONSE
LOAD
I
LOAD
V
IN
(10mA/div)
(500mV/div)
V
OUT
(20mV/div)
V
OUT
V
OUT
(50mV/div)
(50mV/div)
2.5ms/div
25µs/div
5V MODE, AC COUPLED,
2.5ms/div
V
= 2.8V to 3.3V, I
= 10mA, 5V MODE,
IN
LOAD
I
= 0 TO 10mA, 5V MODE, AC COUPLED
LOAD
AC COUPLED
C
= 10µF 0.1µF
OUT
/MAX186H
START-UP WAVEFORM
3V MODE TO 5V MODE
START-UP WAVEFORM
(5V MODE, R = 500Ω)
WAVEFORM (R = 500Ω)
(3V MODE, R = 500Ω)
L
L
L
SHDN
3/5
SHDN
(5V/div)
(5V/div)
(5V/div)
V
OUT
(1V/div)
V
OUT
V
OUT
(1V/div)
(1V/div)
0V
0V
0V
250µs/div
250µs/div
250µs/div
SHUTDOWN WAVEFORM
(3V MODE, NO LOAD)
SHUTDOWN WAVEFORM
(5V MODE, NO LOAD)
5V MODE TO 3V MODE
WAVEFORM (NO LOAD)
SHDN
SHDN
3/5
(5V/div)
(5V/div)
(5V/div)
V
OUT
(1V/div)
V
OUT
(1V/div)
V
OUT
(1V/div)
0V
0V
0V
1ms/div
1ms/div
500µs/div
R = 500Ω
L
4
_______________________________________________________________________________________
3 V t o 5 V Re g u la t in g
Ch a rg e P u m p s fo r S IM Ca rd s
/MAX186H
P in De s c rip t io n
PIN
NAME
FUNCTION
3V/5V Select Input. When low, the output is regulated at 4.75V for MAX1686, 5.00V for MAX1686H. When
high, the output is shorted to the input.
1
3/5
2
3
4
5
6
7
8
SHDN
IN
Active-Low Shutdown Input. SHDN = GND is off. Output is actively pulled low in shutdown.
Supply Input Pin. Can range from 2.7V to 4.2V. Bypass to ground with a ceramic capacitor.
Ground Pin
GND
PGND
CXN
CXP
Power Ground. Connect to GND through a short trace.
Negative Terminal of the Charge-Pump Transfer Capacitor
Positive Terminal of the Charge-Pump Transfer Capacitor
Power Output. Bypass to GND with an output filter capacitor.
OUT
C
X
CXN
CXP
OUT
IN
S2
S1
PGND
EN
OSC
1.23V
PWROK
SS
MAX1686
MAX1686H
SHDN
3/5
POWER
MANAGEMENT
DIS
GND
Figure 1. Functional Diagram
voltage is regulated at 4.75V (5.00V for the MAX1686H)
with a 2.7V to 4.2V input and can deliver more than
12mA of load current.
_______________De t a ile d De s c rip t io n
The MAX1686/MAX1686H charge pumps provide two
modes of operation: 3V mode or 5V mode. The devices
consist of an error amplifier, a 1.23V bandgap refer-
ence, an internal resistive feedback network, a 1MHz
oscillator, high-current MOSFET drivers and switches,
a nd a p owe r-ma na g e me nt b loc k a s s hown in the
Functional Diagram (Figure 1). In 3V mode (3/5 = IN),
the input is connected to the output through a 2.5Ω
switch. In 5V mode (3/5 = GND), the MAX1686’s output
Designed specifically for compact applications, these
regulators require only three small external capacitors.
The Skip Mode control scheme provides high efficiency
over a wide output current range. The devices offer a
shutdown feature which actively discharges the output
to ground and reduces the supply current to less than
_______________________________________________________________________________________
5
3 V t o 5 V Re g u la t in g
Ch a rg e P u m p s fo r S IM Ca rd s
1µA. Other features include soft-start, undervoltage
lockout, and short-circuit protection.
In 3V mode (3/5 = IN), the start-up current is limited by
the 50Ω series P-channel MOSFET connected between
IN and OUT until the output voltage reaches V / 2. For
IN
Ch a rg e -P u m p Co n t ro l
Figure 2 shows an idealized, unregulated charge-pump
volta g e d oub le r. The os c illa tor runs a t a 50% d uty
cycle. During one half of the period, the transfer capac-
V
OUT
> V / 2, R
is reduced to 2.5Ω.
IN
ON
With a 500Ω load the device turns on in less than 1.5ms
(see Typical Operating Characteristics for graphs of
start-up waveforms).
itor (C ) charges to the input voltage. During the other
X
half, the doubler stacks the voltage across C and the
input voltage, and transfers the sum of the two voltages
X
S h u t d o w n Mo d e
Driving SHDN low places the device in shutdown mode,
which disables the oscillator, the control logic, and the
re fe re nc e . Pla c ing the d e vic e in s hutd own mod e
reduces the no-load supply current to less than 1µA; the
output is actively discharged through the internal N-
channel FET and disconnected from the input. In normal
operation, SHDN is driven high or connected to IN.
to the output filter capacitor (C
). The MAX1686 uses
OUT
Skip Mode control to regulate its output voltage and to
achieve good efficiency over a large output current
range. When the comparator detects that the output
voltage is too low, the 1MHz oscillator is enabled and
C
is switched. When the output voltage is above regu-
X
lation, the oscillator is disabled and C is connected at
X
the input.
Ap p lic a t io n s In fo rm a t io n
S o ft -S t a rt
In the 5V mode (3/5 = GND), the start-up current is lim-
ited by the soft-start control to typically 200mA, inde-
pendent of the load. Until the output voltage reaches
Ca p a c it o r S e le c t io n
The MAX1686 requires only three external capacitors.
The capacitor values are closely linked to the output
current capability, noise, and switching frequency. The
1MHz oscillator frequency minimizes capacitor size
compared to lower-frequency charge pumps.
/MAX186H
V
IN
/ 2, the input is connected to the output through a
50Ω series P-channel MOSFET and the charge pump
is disa ble d . For V / 2 < V < 4.75V (5.00V for
IN
OUT
Ge ne ra lly, the tra ns fe r c a p a c itor (C ) will b e the
X
MAX1686H) and for a maximum of 2ms the charge
pump is active, but R of the switch S2 is limited to
smallest, the input capacitor (C ) will be twice the size
IN
ON
of C , and the output capacitor (C
) can be from 10
OUT
X
50Ω. This limits typical current surges associated with
charge pumps at start-up. When soft-start is complete,
to 50 times C . The suggested capacitor values are
X
C
= 0.1µF, C = 0.047µF, a nd C
= 2.2µF a s
IN
X
OUT
V
OUT
> 4.75V (5.00V for MAX1686H) or 2ms (whichever
shown in Figure 3. For input voltages as low as 2.7V,
the following values are recommended: C = 0.47µF,
occurs first), switch S2’s on-resistance is decreased to
minimize losses.
IN
C
= 0.22µF, and C
= 10µF. Table 1 lists the perfor-
X
OUT
C
X
C
X
0.047µF
CXN
CXP
7
6
IN
OUT
INPUT
2.85V TO 4.2V
OUTPUT
V OR 4.75V AT 20mA
CXN
CXP
IN
3
8
IN
OUT
C
C
OUT
S2
IN
S1
2.2µF
(CERAMIC)
0.1µF
MAX1686
2
1
C
IN
SHDN
3/5
C
OUT
3V
5V
OSC
GND
PGND
4
5
GND
Figure 2. Unregulated Voltage Doubler
Figure 3. Standard Application Circuit
6
_______________________________________________________________________________________
3 V t o 5 V Re g u la t in g
Ch a rg e P u m p s fo r S IM Ca rd s
/MAX186H
mance with different input voltages and an additional
La yo u t Co n s id e ra t io n s
High switching frequencies and large peak currents
make PC board layout an important part of design. All
capacitors should be soldered close to the IC. Con-
nect ground and power ground through a short, low-
impedance trace. Keep the extra copper on the board
and integrate it into ground as a pseudo-ground plane.
On multilayer boards, route the star ground using com-
ponent-side copper fill, then connect it to the internal
ground plane using vias. Ensure that the load is con-
nected directly across the output filter capacitor.
small 0.1µF capacitor at the output. The extra 0.1µF
capacitor improves start-up capability under full load
and reduces output ripple for high input voltages. Table
2 lists the re c omme nd e d c a p a c itor ma nufa c ture rs.
Low-ESR capacitors, such as surface-mount ceramics,
decrease noise and give the best efficiency. Capaci-
tance and ESR variation over temperature need to be
taken into consideration for best performance in applica-
tions with large operating temperature ranges.
For applications where the minimum input voltage is 3V
or greater, the flying capacitor, C , can be decreased
X
to 0.1µF. This provides two benefits: the inrush surge
current at start-up is reduced, and the output ripple
volta g e (e s p e c ia lly a t hig h inp ut volta g e s ) is a ls o
reduced.
Table 1. Ripple and Efficiency vs. Input
Voltage and Load Current
Table 2. Recommended Surface-Mount
Capacitor Manufacturers
INPUT
VOLTAGE
(V)
LOAD
CURRENT
(mA)
VALUE
(µF)
PHONE
NUMBER
V
OUT
RIPPLE EFFICIENCY
DESCRIPTION
MFR.
Sprague
AVX
(mV)
(%)
595D-series
tantalum
1 to 47
4.7 to 47
1 to10
(603) 224-1961
(803) 946-0690
(714) 969-2491
2.7
2.7
3.3
3.3
3.6
3.6
4.2
4.2
1
10
1
30
30
60
60
80
80
84.3
86.2
69.5
70.5
63.2
63.8
52.3
52.1
TPS-series
tantalum
10
1
267 series
tantalum
Matsuo
10
1
TDK
AVX
(847) 390-4373
(803) 946-0690
0.047 to 2.2
X7R ceramic
120
120
10
Ch ip In fo rm a t io n
TRANSISTOR COUNT: 840
_______________________________________________________________________________________
7
3 V t o 5 V Re g u la t in g
Ch a rg e P u m p s fo r S IM Ca rd s
P a c k a g e In fo rm a t io n
/MAX186H
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
8 _____________________Ma x im In t e g ra t e d P ro d u c t s , 1 2 0 S a n Ga b rie l Drive , S u n n yva le , CA 9 4 0 8 6 4 0 8 -7 3 7 -7 6 0 0
© 1998 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
相关型号：
SI9130DB
5- and 3.3-V Step-Down Synchronous ConvertersWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1-E3
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135_11
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9136_11
Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130CG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130LG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130_11
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137DB
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137LG
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9122E
500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification DriversWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
©2020 ICPDF网 联系我们和版权申明