- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384734 > MIC2185BQS (MICREL INC) Low Voltage Synchronous Boost PWM Control IC PDF資料下載
參數(shù)資料
| 型號： | MIC2185BQS |
| 廠商： | MICREL INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Low Voltage Synchronous Boost PWM Control IC |
| 中文描述： | SWITCHING CONTROLLER, 440 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | QSOP-16 |
| 文件頁數(shù)： | 2/15頁 |
| 文件大?。?/td> | 141K |
| 代理商： | MIC2185BQS |
MIC2185
Pin Configuration
Micrel
MIC2185
2
May 2002
Pin Description
Pin Number
Pin Name
Pin Function
1
VINA
Input voltage to control circuitry (2.9V to 14V).
2
SKIP
Skip (Input): Regulator operates in PWM mode (no pulse skipping) when pin
is pulled low, and skip mode when raised to VDD. There is no automatic
switching between PWM and skip mode available on this device.
3
SS
Soft Start (External Component) : Reduces the inrush current and delays
and slows the output voltage rise time. A 5
μ
A current source will charge the
capacitor up to VDD.
4
COMP
Compensation (Output): Internal error amplifier output. Connect to a
capacitor or series RC network to compensate the regulator
’
s control loop.
5
SGND
Small Signal Ground (Return) : Must be routed separately from other
grounds to the (
–
) terminal of C
OUT
.
Feedback (Input) : Regulates FB to 1.245V.
6
FB
7
EN/UVLO
Enable/Undervoltaqe Lockout (Input): A low level on this pin will power down
the device, reducing the quiescent current to under 0.5
μ
A. This pin has two
separate thresholds, below 1.5V (typical) the output switching is disabled,
and below 0.9V (typical) the device is forced into a complete micropower
shutdown. The 1.5V threshold functions as an accurate undervoltage lockout
(UVLO) with 140mV hysteresis.
8
VREF
Voltage Reference (Output) : The 1.245V reference is available on this pin.
A 0.1
μ
F capacitor should be connected form this pin to SGnd.
9
CSH
Current Sense (Input) : The (+) input to the current limit comparator. A built
in offset of 100mV (typical) between CSH and SGnd in conjunction with the
current sense resistor sets the current limit threshold level. This is also the
(+) input to the current amplifier.
10
VDD
3V Internal Linear-Regulator (Output) : VDD is also the supply voltage bus
for the chip. Bypass to SGND with 1
μ
F. Maximum source current is 0.5mA.
11
SYNC
Frequency Synchronization (Input): Connect an external clock signal to
synchronize the oscillator. Leading edge of signal above 1.4V (typical) starts
switching cycle. Connect to SGND if not used.
12
PGND
MOSFET Driver Power Ground (Return) : Connects bottom of current sense
resistor and the (
–
) terminal of C
IN
.
N-Channel Drive (Output) : High current drive for n-channel MOSFET.
Voltage swing is from ground to V
IN
P. On-resistance is typically 5
.
P-Channel Drive (Output) : High current drive for the synchronous p-channel
MOSFET. Voltage swing is from ground to V
IN
P. On-resistance is typically
5
.
13
OUTN
14
OUTP
15
FREQ/2
Frequency Divider (Input) : When this pin is low, the oscillator frequency is
400KHz. When this pin is raised to VDD, the oscillator frequency is 200KHz.
16
VINP
Gate Drive Voltage (Input) : This is the power input to the gate drive circuitry
(2.9V to 14V). This pin is typically connected to the output voltage to
enhance gate drive.
1
VINA
SKIP
SS
COMP
SGND
FB
EN/UVLO
VREF
16 VINP
FREQ/2
OUTP
OUTN
PGND
SYNC
VDD
CSH
15
14
13
12
11
10
9
2
3
4
5
6
7
8
16-pin Narrow Body SOP (M)
16-pin QSOP (QS)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MIC2193 | 400KHZ SO 8 SYNCHRONOUS BUCK CONTROL IC |
| MIC2193BM | 400KHZ SO 8 SYNCHRONOUS BUCK CONTROL IC |
| MIC2193YM | 400KHZ SO 8 SYNCHRONOUS BUCK CONTROL IC |
| MIC2194 | SFP Management IC |
| MIC2194BM | 400kHz SO-8 Buck Control IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC2185BQS TR | 功能描述:IC REG CTRLR BST PWM CM 16-QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| MIC2185YM | 功能描述:DC/DC 開關(guān)控制器 SO-16 Low Vin Synchronous Buck PWM Control IC (Lead Free) RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MIC2185YM TR | 功能描述:DC/DC 開關(guān)控制器 SO-16 Low Vin Synchronous Buck PWM Control IC (Lead Free) RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MIC2185YQS | 功能描述:DC/DC 開關(guān)控制器 SO-16 Low Vin Synchronous Buck PWM Control IC (Lead Free) RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MIC2185YQS TR | 功能描述:DC/DC 開關(guān)控制器 SO-16 Low Vin Synchronous Buck PWM Control IC (Lead Free) RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
發(fā)布緊急采購，3分鐘左右您將得到回復。