VIN (Pin 12): Charge Pump Input Pin. May be between 2.6V and 6V. " />
參數(shù)資料
型號: LTC1555LEGN-1.8#TR
廠商: Linear Technology
文件頁數(shù): 5/8頁
文件大小: 0K
描述: IC LEVEL XLATOR/SIM PS 16SSOP
標(biāo)準(zhǔn)包裝: 2,500
邏輯功能: 電平移位器
位數(shù): 1
輸入類型: 電壓
輸出類型: 電壓
通道數(shù): 1
輸出/通道數(shù)目: 1
差分 - 輸入:輸出: 無/無
傳輸延遲(最大): 18ns
電源電壓: 1.8 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
封裝/外殼: 16-SSOP(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-SSOP
包裝: 帶卷 (TR)
其它名稱: LTC1555LEGN-1.8TR
LTC1555L-1.8
5
VIN (Pin 12): Charge Pump Input Pin. May be between 2.6V
and 6V. There is no power-up sequencing requirement for
VIN with respect to DVCC.
VCC (Pin 13): SIM Card VCC Output. Should be connected
to the SIM VCC contact. The VCC output voltage is deter-
mined by the M0-M2 pins (see Table 1). VCC is discharged
to GND during shutdown (M0, M1 = 0V). A 2.2
F low ESR
ouptut capacitor should connect close to the VCC pin.
I/O (Pin 14): SIM Side I/O Pin. The pin is an open drain
output with a nominal pull-up resistance of 10k
and
should be connected to the SIM I/O contact. The SIM card
must sink up to 1mA max when driving the I/O pin low due
to the internal pull-up resistors on the I/O and DATA pins.
The I/O pin is held active low during shutdown.
RST (Pin 15): Level Shifted Reset Output Pin. Should be
connected to the SIM RST contact.
CLK (Pin 16): Level Shifted Clock Output Pin. Should be
connected to the SIM CLK contact. Careful trace routing is
recommended due to fast rise and fall edge speeds.
M0
M1
M2
OPERATING MODE
0V
0V or DVCC
Shutdown (VCC = 0V)
0V
DVCC
0V or DVCC
VCC = VIN
DVCC
0V
VCC = 3V
DVCC
0V
DVCC
VCC = 1.8V
DVCC
0V or DVCC
VCC = 5V
Table 1. Truth Table
PIN FUNCTIONS
UU
U
M2 (Pin 6): Mode Control Bit 2 (see Table 1). (Pin 6 was
previously used for soft-start control on the LTC1555.)
M1 (Pin 7): Mode Control Bit 1 (see Table 1).
M0 (Pin 8): Mode Control Bit 0 (see Table 1).
GND (Pin 9): Ground for Both the SIM and the Controller.
Should be connected to the SIM GND contact as well as to
the VIN/controller GND. Proper grounding and supply
bypassing is required to meet 10kV ESD specifications.
C1(Pin 10): Charge Pump Flying Capacitor Negative Input.
C1+ (Pin 11): Charge Pump Flying Capacitor Positive Input.
BLOCK DIAGRA
W
DDRV
OPTIONAL
1
A
I/O
DATA
20k
10k
CLK
CIN
RST
DVCC
M2
1.8V
RIN
GND
M1
M0
VIN
VBATT
CIN
1
F
VCC
I/O
CLK
RST
GND
VCC
C1+
0.1
F
C1
STEP-UP/
STEP-DOWN
CHARGE PUMP
DC/DC
CONVERTER
SIM
CONTROLLER
VCC
COUT
2.2
F
UVLO
LTC1555L-1.8
1555L BD
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