參數(shù)資料
型號(hào)： LTC3456
廠商： Linear Technology Corporation
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： 2-Cell, Multi-Output DC/DC Converter with USB Power Manager
中文描述： 2節(jié)電池，多輸出DC / DC轉(zhuǎn)換器與USB電源管理器
文件頁數(shù)： 4/28頁
文件大?。?/td> 358K
代理商： LTC3456
4
LTC3456
3456f
ELECTRICAL CHARACTERISTICS
The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25
°
C.
V
BATT
= 2.4V, V
INT
= 3.3V, V
PWRON
= 2V, PWRKEY is open, V
USB
= 0V, V
WALLFB
= 0V, unless otherwise specified.
PARAMETER
CONDITIONS
USB
USB Turn-On Voltage Threshold
Rising Edge
USB Turn-On Voltage Hysteresis
USB PMOS Switch On-Resistance
V
USB
= 5V
USB Current Limit
V
USBHP
= 2V (500mA Mode), V
USB
= 5V
V
USBHP
= 0V (100mA Mode), V
USB
= 5V
SUSPEND Pin Threshold
V
USB
= 5V
USBHP Pin Threshold
V
USB
= 5V
SUSPEND Pin Pull-Down Current
V
USB
= 5V, V
SUSPEND
= 2V
USBHP Pin Pull-Down Current
V
USB
= 5V, V
USBHP
= 2V
USB Pin Bias Current (Suspend Mode)
V
USB
= 5V, V
SUSPEND
= 2V
AC Adapter
WALLFB Pin Threshold
Rising Edge
WALLFB Pin Hysteresis
WALLFB Pin Input Bias Current
V
WALLFB
= 1.25V, V
EXT
= 5V
V
EXT
UVLO Voltage
Rising Edge
V
EXT
UVLO Hysteresis
EXT_PWR Pin Low Voltage
V
USB
> 4V and V
SUSPEND
= 0V or
WALLFB > 1.25V, I
EXT_PWR
= 1mA
Gain Block
AIN Pin Reference Voltage
AIN Pin Input Bias Current
V
AIN
= 0.8V
AO Pin Low Voltage
V
AIN
= 0V, I
AO
= 1mA
Logic Inputs
PWRKEY Pin Input High Voltage
PWRKEY Pin Input Low Voltage
PWRKEY Pin Pull-Up Resistor to V
MAX
PBSTAT Pin Low Voltage
V
PWRKEY
= 0V, I
PBSTAT
= 100
μ
A
PWRON Pin Threshold
PWRON Pin Pull-Down Current
V
PWRON
= 2V
MODE Pin Threshold
MODE Pin Pull-Down Current
V
MODE
= 2V
RESET Pin Low Voltage
I
RESET
= 100
μ
A
RESET Pulse Duration
After V
FB1
and V
INT
in Regulation
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2:
The LTC3456 is guaranteed to meet performance specifications
from 0
°
C to 70
°
C. Specifications over the –40
°
C to 85
°
C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3:
Quiescent current is pulled from the V
INT
pin when neither USB
nor wall power is present. Multiply this value by V
INT
/V
BATT
to get the
equivalent input (battery) current.
Note 4:
Quiescent current is pulled from the V
EXT
pin when either USB or
wall power is present.
Note 5:
Specification is guaranteed by design and not 100% tested in
production.
MIN
TYP
MAX
UNITS
3.9
4
4.1
V
75
0.5
420
85
0.8
0.8
2.5
2.5
100
mV
●
500
100
1.2
1.2
mA
mA
0.3
0.3
V
V
μ
A
μ
A
μ
A
150
●
1.2
1.25
20
±
2
4
150
0.25
1.3
V
mV
nA
●
±
20
4.1
3.9
V
mV
0.5
V
0.78
0.800
±
2
0.25
0.83
±
20
0.5
V
●
nA
V
0.7V
MAX
V
V
0.3V
MAX
400
0.05
0.8
1
0.8
1
0.05
262
k
0.1
1.2
V
V
0.3
μ
A
V
μ
A
V
ms
0.3
1.2
0.1
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