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LTC4557 Datasheet(PDF) 2 Page - Linear Technology

Part # LTC4557
Description  Dual SIM/Smart Card Power Supply and Interface
PDF  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4557 Datasheet(HTML) 2 Page - Linear Technology

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LTC4557
4557f
TJMAX = 125°C, θJA = 68°C/W, θJC = 42°C/W
EXPOSED PAD (PIN 17) IS GND
(MUST BE SOLDERED TO PCB)
16 15 14 13
5
6
7
8
TOP VIEW
17
UD PACKAGE
16-LEAD (3mm
× 3mm) PLASTIC QFN
9
10
11
12
4
3
2
1
VCCB
DVCC
VBATT
VCCA
M0
M1
CLKIN
RSTIN
VBATT, DVCC, DATA, RSTIN, CLKIN,
ENABLE, M0, M1 to GND ............................ – 0.3V to 6V
I/OA, CLKA, RSTA ........................ – 0.3V to VCCA + 0.3V
I/OB, CLKB, RSTB ........................ – 0.3V to VCCB + 0.3V
ICCA,B (Note 4) ...................................................... 80mA
VCCA,B Short-Circuit Duration ......................... Indefinite
Operating Temperature Range (Note 3) .. – 40
°C to 85°C
Storage Temperature Range ................... – 65
°C to 125°
ORDER PART
NUMBER
UD PART MARKING
LAHP
LTC4557EUD
(Note 1)
The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VBATT = 3.3V, DVCC = 1.8V, unless otherwise specified.
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
ELECTRICAL CHARACTERISTICS
Consult LTC Marketing for parts specified with wider operating temperature ranges.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Power Supply
VBATT Operating Voltage
q
2.7
5.5
V
IVBATT Operating Current
VCCA = 3V, VCCB = 0V, ICCA = ICCB = 0µA
q
65
100
µA
VCCA = 1.8V, VCCB = 0V, ICCA = ICCB = 0µA
q
65
100
µA
DVCC Operating Voltage
q
1.2
5.5
V
IDVCC Operating Current
q
610
µA
IDVCC Shutdown Current
q
0.1
1
µA
IVBATT Shutdown Current
q
0.4
2.5
µA
DVCC = 0V
q
0.1
1.0
µA
SIM Card Supplies
VCCA,B Output Voltage
3V Mode, 0mA < ICCA,B < 50mA
q
2.75
3.0
3.25
V
1.8V Mode, 0mA < ICCA,B < 3OmA
q
1.65
1.8
1.95
V
Channel Turn-On Time
ICCA,B = 0mA,
ENABLE to
IOA/B
q
1.3
2.5
ms
CLKA, CLKB
VOL
Low Level Output Voltage
Sink Current = –200
µA (Note 2)
q
0.2
V
VOH
High Level Output Voltage
Source Current = 200
µA (Note 2)
q
VCCA,B –V
0.2
Rise, Fall Time
Loaded with 33pF (10% to 90%) (Note 2)
q
16
ns
CLKA, CLKB Frequency
(Note 2)
q
10
MHz
RSTA, RSTB
VOL
Low Level Output Voltage
Sink Current = –200
µA (Note 2)
q
0.2
V
VOH
High Level Output Voltage
Source Current = 200
µA (Note 2)
q
VCCA,B –V
0.2
Rise, Fall Time
Loaded with 33pF (10% to 90%) (Note 2)
q
100
ns



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