LINER LT1313 Dual pcmcia vpp driver/regulator Datasheet

LT1313
Dual PCMCIA
VPP Driver/Regulator
U
DESCRIPTION
FEATURES
■
■
■
■
■
■
■
■
■
■
Digital Selection of 0V, VCC, 12V or Hi-Z
Output Current Capability: 120mA
Internal Current Limiting and Thermal Shutdown
Automatic Switching from 3.3V to 5V
Powered from Unregulated 13V to 20V Supply
Logic Compatible with Standard PCMCIA Controllers
Output Capacitors: 1µF
Quiescent Current in Hi-Z or 0V Mode: 60µA
Independent VPP Valid Status Feedback Signals
No VPP Overshoot
U
APPLICATIONS
■
■
■
■
■
■
The LT ® 1313 is a member of Linear Technology
Corporation’s PCMCIA driver/regulator family. It provides
0V, 3.3V, 5V, 12V and Hi-Z regulated power to the VPP
pins of two PCMCIA card slots from a single unregulated
13V to 20V supply. When used in conjunction with a PC Card
Interface Controller, the LT1313 forms a complete minimum
component-count interface for palmtop, pen-based and notebook computers. The two VPP output voltages are independently selected by four logic compatible digital inputs
which interface directly with industry standard PC Card
Interface Controllers.
Automatic 3.3V to 5V switching is provided by two independent comparators which continuously monitor each
PC card VCC supply voltage and automatically adjust the
VPP output to match the associated VCC pin voltage when
the VPP = VCC mode is selected.
Notebook Computers
Palmtop Computers
Pen-Based Computers
Handi-Terminals
Bar-Code Readers
Flash Memory Programming
Two open-collector VPP VALID outputs are provided to
indicate when the VPP outputs are in regulation at 12V.
The LT1313 is available in 16-pin SO packaging.
, LTC and LT are registered trademarks of Linear Technology Corporation.
U
TYPICAL APPLICATION
Typical PCMCIA Dual Slot VPP Driver
13V TO 20V
Linear Technology PCMCIA Product Family
0.1µF
VS
AEN0
VS
AVPPOUT
VPP1
+
AEN1
DUAL PCMCIA
CARD SLOT
CONTROLLER
AVALID
BVPPOUT
BEN1
BVALID
GND
VPP2
PCMCIA
CARD SLOT
#1
VCC
ASENSE
+
1µF
TANTALUM
BSENSE
GND
DEVICE
DESCRIPTION
PACKAGE
LT1312
SINGLE PCMCIA VPP DRIVER/REGULATOR
8-PIN SO
LT1313
DUAL PCMCIA VPP DRIVER/REGULATOR
16-PIN SO*
®
LTC 1314 SINGLE PCMCIA SWITCH MATRIX
14-PIN SO
VPP1
LTC1315
DUAL PCMCIA SWITCH MATRIX
24-PIN SSOP
VPP2
PCMCIA
CARD SLOT
#2
LTC1470
PROTECTED VCC 5V/3.3V SWITCH MATRIX
8-PIN SO
LTC1472
PROTECTED VCC AND VPP SWITCH MATRIX 16-PIN SO*
3.3V/5V
LT1313
BEN0
1µF
TANTALUM
*NARROW BODY
VCC
1313 TA01
3.3V/5V
1
LT1313
W
U
U
U
W W
W
ABSOLUTE MAXIMUM RATINGS
PACKAGE/ORDER INFORMATION
Supply Voltage ........................................................ 22V
Digital Input Voltage ........................ 7V to (GND – 0.3V)
Sense Input Voltage ......................... 7V to (GND – 0.3V)
VALID Output Voltage .................... 15V to (GND – 0.3V)
Output Short-Circuit Duration .......................... Indefinite
Operating Temperature ................................ 0°C to 70°C
Junction Temperature................................ 0°C to 125°C
Storage Temperature Range ..................–65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
TOP VIEW
GND
1
16 AVPPOUT
AEN0
2
15 NC
AEN1
3
14 VS
AVALID
4
13 ASENSE
ORDER PART
NUMBER
LT1313CS
GND
5
12 BVPPOUT
BEN0
6
11 NC
BEN1
7
10 VS
BVALID
8
9
BSENSE
S PACKAGE
16-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 100°C/ W
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS
VS = 13V to 20V, TA = 25°C (Note 1), unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VPPOUT
Output Voltage
Program to 12V, IOUT ≤ 120mA (Note 2)
Program to 5V, IOUT ≤ 30mA (Note 2)
Program to 3.3V, IOUT ≤ 30mA (Note 2)
Program to 0V, IOUT = – 300µA
●
●
●
11.52
4.75
3.135
12.00
5.00
3.30
0.42
12.48
5.25
3.465
0.60
V
V
V
V
ILKG
Output Leakage
Program to Hi-Z, 0V ≤ VPPOUT ≤ 12V
●
– 10
10
µA
IS
Supply Current
Both Channels Programmed to 0V
Both Channels Programmed to Hi-Z
One Channel Programmed to 12V, No Load (Note 3)
One Channel Programmed to 5V, No Load (Note 3)
One Channel Programmed to 3.3V, No Load (Note 3)
One Channel Programmed to 12V, IOUT = 120mA (Note 3)
One Channel Programmed to 5V, IOUT = 30mA (Note 3)
One Channel Programmed to 3.3V, IOUT = 30mA (Note 3)
●
●
●
●
●
●
●
●
60
60
260
105
85
126
31
31
100
100
400
150
120
132
33
33
µA
µA
µA
µA
µA
mA
mA
mA
ILIM
Current Limit
Program to 3.3V, 5V or 12V (Note 3)
330
500
mA
VENH
Enable Input High Voltage
●
VENL
Enable Input Low Voltage
●
IENH
Enable Input High Current
2.4V ≤ VIN ≤ 5.5V
IENL
Enable Input Low Current
0V ≤ VIN ≤ 0.4V
VSEN5
VCC Sense Threshold
VPPOUT = 3.3V to 5V (Note 4)
●
VSEN3
VCC Sense Threshold
VPPOUT = 5V to 3.3V (Note 4)
●
ISEN
VCC Sense Input Current
VSENSE = 5V
VSENSE = 3.3V
VVALID TH VPPVALID Threshold Voltage
Program to 12V, (Note 5)
IVALID
VPPVALIDOutput Drive Current
Program to 12V, VVALID = 0.4V, (Note 5)
VPPVALID Output Leakage Current
Program to 0V, VVALID = 12V, (Note 5)
The ● denotes the specifications which apply over the full operating
temperature range.
Note 1: Both VS pins (10, 14) must be connected together, and both
ground pins (1, 5) must be connected together.
Note 2: For junction temperatures greater than 110°C, a minimum
load of 1mA is recommended.
2
●
2.4
V
0.4
V
20
50
µA
0.01
1
µA
3.60
4.05
4.50
V
3.60
4.00
4.50
V
38
18
60
30
µA
µA
10.5
11
11.5
1
3.3
0.1
V
mA
10
µA
Note 3: The other channel is programmed to the 0V mode (XEN0 =
XEN1 = 0V) during this test.
Note 4: The VCC sense threshold voltage tests are performed
independently.
Note 5: The VPPVALID tests are performed independently.
LT1313
U W
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Current
(0V or Hi-Z Mode)
Quiescent Current (12V Mode)
60
40
20
5
0
15
20
10
SUPPLY VOLTAGE (V)
400
300
200
100
0
25
TJ = 25°C
ONE CHANNEL PROGRAMMED TO 12V
OTHER CHANNEL IN 0V OR Hi-Z MODE
RL = ∞
5
15
20
10
SUPPLY VOLTAGE (V)
Ground Pin Current (12V Mode)
2
RL = 400Ω
IL = 30mA*
5
0
15
20
10
SUPPLY VOLTAGE (V)
2.0
1.5
RL = 167Ω
IL = 30mA*
1.0
RL = 500Ω
IL = 10mA*
25
0
5
SHORT-CIRCUIT CURRENT (mA)
GROUND PIN CURRENT (mA)
12
10
8
6
4
1.0
40 60 80 100 120 140 160
OUTPUT CURRENT (mA)
1313 G07
RL = 330Ω
IL = 10mA*
15
20
10
SUPPLY VOLTAGE (V)
*FOR VPPOUT = 3.3V
25
0
5
15
20
10
SUPPLY VOLTAGE (V)
Current Limit
TJ = 25°C
XVPPOUT = 0V
SINGLE CHANNEL
600
500
400
300
200
0
5
25
1313 G06
600
700
0
20
RL = 110Ω
IL = 30mA*
0
100
2
0
1.5
Current Limit
800
TJ = 25°C
VS = 15V
SINGLE CHANNEL
14
2.0
1313 G05
Ground Pin Current
25
TJ = 25°C
3.3V MODE
SINGLE OUTPUT
VSENSE = 3.3V
0.5
*FOR VPPOUT = 5V
0
1313 G04
16
15
20
10
SUPPLY VOLTAGE (V)
Ground Pin Current (3.3V Mode)
TJ = 25°C
5V MODE
SINGLE OUTPUT
VSENSE = 5V
0.5
*FOR VPPOUT = 12V
0
5
2.5
SHORT-CIRCUIT CURRENT (mA)
RL = 200Ω
IL = 60mA*
0
1313 G03
GROUND CURRENT (mA)
GROUND CURRENT (mA)
GROUND CURRENT (mA)
TJ = 25°C
12V MODE
SINGLE OUTPUT
4
VSENSE = 3.3V
50
Ground Pin Current (5V Mode)
RL = 100Ω
IL = 120mA*
VSENSE = 5V
100
25
2.5
6
150
1313 G02
10
8
TJ = 25°C
ONE CHANNEL PROGRAMMED TO
VPP = VCC. OTHER CHANNEL IN
0V OR Hi-Z MODE
RL = ∞
200
0
0
LT1313 G1
0
QUIESCENT CURRENT (µA)
TJ = 25°C
BOTH CHANNELS PROGRAMMED TO 0V
OR BOTH CHANNELS PROGRAMMED TO Hi-Z
80
0
Quiescent Current (3.3V/5V Mode)
250
500
QUIESCENT CURRENT (µA)
QUIESCENT CURRENT (µA)
100
10
15
INPUT VOLTAGE (V)
20
25
1313 G08
VS = 15V
XVPPOUT = 0V
SINGLE CHANNEL
500
400
300
200
100
0
0
25
50
75
100
JUNCTION TEMPERATURE (°C)
125
1313 G09
3
LT1313
U W
TYPICAL PERFORMANCE CHARACTERISTICS
Enable Input Threshold Voltage
5.5
2.0
1.5
1.0
0.5
VCC SENSE THRESHOLD VOLTAGES (V)
2.5
TJ = 25°C
VS = 15V
ENABLE INPUT CURRENT (µA)
INPUT THRESHOLD VOLTAGE (V)
VS = 15V
0
VCC Sense Threshold Voltage
Enable Input Current
50
3.0
40
30
20
10
0
0
0
125
25
50
75
100
JUNCTION TEMPERATURE (°C)
1
2
3
4
5
ENABLE INPUT VOLTAGE (V)
VCC Sense Input Current
30
20
10
5
2
3
4
1
VCC SENSE INPUT VOLTAGE (V)
TJ = 25°C
VS = 15V
12V MODE
0.8
0.6
0.4
0.2
2.5
1.0
1.5
2.0
0.5
VALID OUTPUT CURRENT (mA)
0
0.4 0.6
TIME (ms)
0.8
1.0
1.2
1313 G16
4
40
20
100
1k
10k
FREQUENCY (Hz)
COUT = 1µF
0
COUT = 10µF
–20
0.4
0.2
COUT = 1µF
0
COUT = 10µF
–0.2
–0.4
15
13
–0.1
1M
Load Transient Response (12V)
40
20
100k
1313 G15
LOAD
CURRENT (mA)
SUPPLY
VOLTAGE (V)
5
COUT = 1µF TANTALUM
10
–40
0.2
60
3.0
OUTPUT VOLTAGE
CHANGE (V)
OUTPUT VOLTAGE
CHANGE (mV)
COUT = 10µF
11.6
EN0 INPUT (V)
OUTPUT VOLTAGE (V)
12.0
0
80
Line Transient Response (12V)
VS = 15V
–0.2
TJ = 25°C, 12V MODE
VS = 15V + 100mVRMS RIPPLE
1313 G14
1313 G13
12V Turn-On Waveform
125
25
50
75
100
JUNCTION TEMPERATURE (°C)
0
0
6
12.4
0
Ripple Rejection (12V)
0
0
COUT = 1µF
3.0
100
RIPPLE REJECTION RATIO (dB)
VALID OUTPUT VOLTAGE (V)
VCC SENSE INPUT CURRENT (µA)
40
SWITCH TO 3.3V
3.5
VALID Output Voltage
TJ = 25°C
VS = 15V
11.8
SWITCH TO 5V
4.0
1313 G12
1.0
50
12.2
4.5
1313 G11
1313 G10
0
5.0
2.5
6
TJ = 25°C
VS = 15V
0
0.1
0.2 0.3
TIME (ms)
0.4
0.5
0.6
1313 G17
100
50
–0.1
0
0.1
0.2 0.3
TIME (ms)
0.4
0.5
0.6
1313 G18
LT1313
U
U
U
PIN FUNCTIONS
Supply Pins: Power is supplied to the device through the
two supply pins which must be connected together at all
times . The supply pins should be bypassed to ground if
the device is more than six inches away from the main
supply capacitor. A bypass capacitor in the range of 0.1µF
to 1µF is sufficient. The supply voltage to the LT1313 can
be loosely regulated between 13V and 20V.
VPPOUT Pins: Each regulated output supplies power to the
two PCMCIA card VPP pins which are typically tied together at the socket. Each VPPOUT output is current limited
to approximately 330mA. Thermal shutdown provides a
second level of protection. A 1µF to 10µF tantalum output
capacitor is recommended.
Input Enable Pins: The four digital input pins are high
impedance inputs with approximately 20µA input current
at 2.4V. The input thresholds are compatible with CMOS
controllers and can be driven from either 5V or 3.3V CMOS
logic. ESD protection diodes limit input excursions to 0.6V
below ground.
W
BLOCK DIAGRAM
VCC Sense Pins: Two independent comparators and 4V
references automatically switch the VPPOUT outputs from
5V to 3.3V depending upon the voltage sensed at the
corresponding PCMCIA card socket VCC pin. The input
current for these pins is approximately 30µA. For 5V only
operation, connect the Sense pins directly to ground. An
ESD protection diode limits the input voltage to 0.6V below
ground.
Ground Pins: The two ground pins must be connected
together at all times.
(One Channel)
LOW DROPOUT
LINEAR
REGULATOR
VS
XVCC SENSE
VALID Output Pins: These pins are open-collector NPN
outputs which are driven low when the corresponding
VPPOUT pin is in regulation, i.e., when it is above 11V. Two
external 51k pull-up resistors are connected between
these outputs and the same 5V or 3.3V logic supply
powering the PCMCIA compatible control logic.
XVPPOUT
+
–
4V
XVALID
+
XEN0
VOLTAGE
LOGIC CONTROL
–
XEN1
11V
X = A OR B
1313 BD
5
LT1313
U
OPERATION
The LT1313 is two programmable output voltage, lowdropout linear regulators designed specifically for PCMCIA
VPP drive applications. Input power is typically obtained
from a loosely regulated input supply between 13V and
20V. The LT1313 consists of the following blocks:
Two Low Dropout Voltage Linear Regulators: The heart
of the LT1313 is two PNP-based low-dropout voltage
regulators which drop the unregulated supply voltage
from 13V to 20V down to 12V, 5V, 3.3V, 0V or Hi-Z
depending upon the state of the four Enable inputs and the
two VCC Sense inputs. The regulators have built-in current
limiting and thermal shutdown to protect the device, the
loads, and the sockets against inadvertent short circuiting
to ground.
Voltage Control Logic: The two VPPOUT outputs have five
possible output modes: 0V, 3.3V, 5V, 12V and Hi-Z. These
five modes are selected by the four Enable inputs and the
two VCC Sense inputs as described by the Truth Table.
VCC Sense Comparators: When the VCC mode is selected,
the LT1313 automatically adjusts each regulated VPP output
voltage to 3.3V or 5V depending upon the voltage present
at the corresponding PC card VCC supply pin. The threshold voltage for these comparators is set at 4V and there is
approximately 50mV of hysteresis provided to ensure
clean switching between 3.3V and 5V.
VPP VALID Comparator: Two voltage comparators monitor each output voltage when the 12V mode is selected and
are driven low when the output is in regulation above 11V.
These two outputs function separately.
LT1313 Truth Table
AEN0
AEN1
ASENSE
AVPPOUT
AVALID
0
1
0
0
1
0
0
1
1
1
X
X
3.0V to 3.6V
4.5V to 5.5V
X
0V
12V
3.3V
5V
Hi-Z
1
0
1
1
1
BEN0
BEN1
BSENSE
BVPPOUT
BVALID
0
1
0
0
1
0
0
1
1
1
X
X
3.0V to 3.6V
4.5V to 5.5V
X
0V
12V
3.3V
5V
Hi-Z
1
0
1
1
1
X = Don’t Care
Note: Each channel is independently controlled.
U
W
U
U
APPLICATIONS INFORMATION
The LT1313 is two voltage programmable linear regulators designed specifically for PCMCIA VPP driver applications. The device operates with very low quiescent current
(60µA) in the 0V and Hi-Z modes of operation. In the Hi-Z
mode, the output leakage current falls to 1µA. In addition
to the low quiescent currents, the LT1313 incorporates
several protection features which make it ideal for PCMCIA
applications. The LT1313 has built-in current limiting
(330mA) and thermal shutdown to protect the device and the
socket VPP pins against inadvertent short-circuit conditions.
Output Capacitance
The LT1313 is designed to be stable with a wide range of
output capacitors. The minimum recommended value is a
1µF with an ESR of 3Ω or less. The capacitor is connected
directly between the output pin and ground. For applications
where space is very limited, capacitors as low as 0.33µF can
6
be used. Extremely low ESR ceramic capacitors with values
less than 1µF must have a 2Ω resistor added in series with
the output capacitor.
Transient and Switching Performance
The LT1313 is designed to produce minimal overshoot
with capacitors in the range of 1µF to 10µF. Larger
capacitor values can be used with a slowing of rise and
fall times.
The positive output slew rate is determined by the 330mA
current limit and the output capacitor. The rise time for a
0V to 12V transition is approximately 40µs and the rise
time for a 10µF capacitor is roughly 400µs (see the
Transient Response curves in the Typical Performance
Characteristics section).
LT1313
U
W
U
U
APPLICATIONS INFORMATION
The fall time from 12V to 0V is set by the output capacitor
and an internal pull-down current source which sinks
about 30mA. This source will fully discharge a 1µF capacitor in less than 1ms.
Thermal Considerations
Power dissipated by the device is the sum of two components: output current multiplied by the input-output differential voltage: IOUT × (VIN – VOUT), and ground pin current
multiplied by supply voltage: (IGND × VIN).
The ground pin current can be found by examining the
Ground Pin Current curves in the Typical Performance
Characteristics section.
Heat sinking, for surface mounted devices, is accomplished by using the heat spreading capabilities of the PC
board and its copper traces.
The junction temperature of the LT1313 must be limited to
125°C to ensure proper operation. Use Table 1, in conjunction with the typical performance graphs, to calculate
the power dissipation and die temperature for a particular
application and ensure that the die temperature does not
exceed 125°C under any operating conditions.
Table 1. 16-Pin SO Package*
COPPER AREA
TOPSIDE
2500 sq mm
1000 sq mm
225 sq mm
1000 sq mm
BACKSIDE
BOARD AREA
THERMAL RESISTANCE
(JUNCTION-TO-AMBIENT)
2500 sq mm
2500 sq mm
2500 sq mm
1000 sq mm
2500 sq mm
2500 sq mm
2500 sq mm
1000 sq mm
120°C/W
120°C/W
125°C/W
131°C/W
Calculating Junction Temperature
Example: given an output voltage of 12V, an input supply
voltage of 14V, and an output current of 100mA (one VPP
output), and a maximum ambient temperature of 50°C,
what will the maximum junction temperature be?
Power dissipated by the device will be equal to:
IOUT × (VS – VPPOUT) + (IGND × VIN)
where,
IOUT = 100mA
VIN = 14V
IGND at (IOUT = 100mA, VIN = 14V) = 5mA
so,
PD = 100mA × (14V –12V) + (5mA × 15V) = 0.275W
Using Table 1, the thermal resistance will be in the range
of 120°C/W to 131°C/W depending upon the copper area.
So the junction temperature rise above ambient will be
less than or equal to:
0.275W × 131°C/W = 36°C
The maximum junction temperature will then be equal to
the junction temperature rise above ambient plus the
maximum ambient temperature or:
TJMAX = 50°C + 36°C = 86°C
For more detailed applications information, see the LT1312
Single PCMCIA VPP Driver/Regulator data sheet.
* Device is mounted on topside.
7
LT1313
U
TYPICAL APPLICATIONS
Dual Slot PCMCIA Interface to CL-PD6720
VLOGIC
13V
TO 20V
0.1µF
51k
A_VPP_PGM
VS
AEN0
A_VPP_VCC
AEN1
VPP1
VS
AVPPOUT
VPP2
+
PCMCIA
CARD SLOT
#1
1µF
3.3V/5V
AVALID
VCC
ASENSE
LT1313
B_VPP_PGM
BEN0
VPP1
BVPPOUT
VPP2
+
1µF
B_VPP_VCC
BEN1
VPP_VALID
BVALID
GND
3.3V/5V
BSENSE
GND
CIRRUS LOGIC
CL-PD6720
Q1
Si9405DY
Q2
Si9933DY
AVCC 3V
5V
+
10µF
Q3
Si9933DY
Q4
Si9405DY
BVCC 5V
3.3V
Q5
Si9933DY
BVCC 3V
Q6
Si9933DY
3.3V
+
10µF
P-CHANNEL
VCC SWITCHING
N-CHANNEL VCC SWITCHING USING
LTC1165 INVERTING N-CHANNEL DRIVERS
5V
IN1
AVCC 5V
VS
5V
Q1
1/2 Si9956DY
OUT1
TO VCC SLOT 1
LTC1165CS8
AVCC 3V
IN3
IN1
VS
OUT1
Q2
Si9956DY
OUT2
IN2
5V
GND
Q3
Si9956DY
OUT3
5V
Q4
1/2 Si9956DY
IN2
IN3
GND
OUT2
Q5
Si9956DY
OUT3
Q6
Si9956DY
3.3V
8
3.3V
TO VCC SLOT 2
LTC1165CS8
BVCC 3V
VCC
5V
AVCC 5V
BVCC 5V
PCMCIA
CARD SLOT
#2
1313 TA02
LT1313
U
TYPICAL APPLICATIONS
Dual Slot PCMCIA Interface to “365” Type Controller
VLOGIC
13V
TO 20V
51k
51k
0.1µF
VS
AVPPOUT
VS
AEN0
A_VPP_EN0
A_VPP_EN1
VPP1
VPP2
PCMCIA
CARD SLOT
#1
VCC
+
1µF
AEN1
3.3V/5V
AVALID
A:GP1
ASENSE
LT1313
B_VPP_EN0
BEN0
B_VPP_EN1
BEN1
VPP1
BVPPOUT
VPP2
+
1µF
3.3V/5V
BVALID
GND
B:GP1
BSENSE
GND
PCMCIA
CARD SLOT
#2
VCC
“365” TYPE
CONTROLLER
5V
VS
IN1
A_VCC_EN0
5V
Q1
1/2 Si9956DY
G1
LTC1157CS8
Q2
Si9956DY
A_VCC_EN1
IN2
GND
5V
B_VCC_EN1
VS
Q3
Si9956DY
G1
3.3V
Q4
1/2 Si9956DY
LTC1157CS8
Q5
Si9956DY
IN2
GND
10µF
G2
5V
B_VCC_EN0
IN1
+
+
10µF
G2
Q6
Si9956DY
1313 TA03
3.3V
9
LT1313
U
TYPICAL APPLICATIONS
Dual Slot PCMCIA Driver/Regulator Powered from
Auxiliary Winding on 5V Inductor of LTC1142HV Dual 5V/3.3V Switching Regulator
VIN
6.5V TO 18V
VIN
D1
MBRS140
10
+
Q1
PDRIVE
LTC1148
SINGLE
5V REG
9
R4
22Ω
C1
68µF
C4
1000pF
D2
MBRS140
14V AUXILIARY SUPPLY
Q2
NDRIVE
SENSE
20
D3
MBRS130T3
R1
100Ω
+ 15
SENSE–
14
C2
1000pF
R3
18k
Q3
VN7002
T1*
1.8T
30µH
+
C5
22µF
VS
VS
AVPPOUT
AEN0
R5
0.033Ω
R2
100Ω
+
C3
220µF
5V
OUTPUT
TO “A” SLOT
VPP PINS
+
1µF
AEN1
AVALID
FROM “A” SLOT
VCC PIN
ASENSE
LT1313
Q4
VN7002
BEN0
*LPE-6562-A026 DALE (605) 655-9301
AEN0
AEN1
AVALID
BVPPOUT
TO “B” SLOT
VPP PINS
+
1µF
BEN1
BVALID
BSENSE
GND
GND
FROM “B” SLOT
VCC PIN
BEN0
BEN1
1313 TA04
BVALID
NOTE: SEE LT1312 DATA SHEET APPLICATIONS SECTION
FOR FURTHER DETAILS ON THIS CIRCUIT
10
LT1313
U
PACKAGE DESCRIPTION
Dimensions in inches (millimeters) unless otherwise noted.
S Package
16-Lead Narrow Plastic SOIC
0.386 – 0.394*
(9.804 – 10.008)
16
15
14
13
12
11
10
9
0.150 – 0.157*
(3.810 – 3.988)
0.228 – 0.244
(5.791 – 6.197)
1
0.010 – 0.020
× 45°
(0.254 – 0.508)
0.008 – 0.010
(0.203 – 0.254)
2
3
4
5
6
8
0.053 – 0.069
(1.346 – 1.752)
0.004 – 0.010
(0.101 – 0.254)
0° – 8° TYP
0.016 – 0.050
0.406 – 1.270
7
0.014 – 0.019
(0.355 – 0.483)
0.050
(1.270)
TYP
SO16 0893
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
11
LT1313
RELATED PARTS
See PCMCIA Product Family table on the first page of this data sheet.
12
Linear Technology Corporation
LT/GP 0994 10K • PRINTED IN USA
1630 McCarthy Blvd., Milpitas, CA 95035-7487
(408) 432-1900 ● FAX: (408) 434-0507 ● TELEX: 499-3977
 LINEAR TECHNOLOGY CORPORATION 1994
Similar pages