亚洲中字幕日产AV片在线,日韩少妇人妻VS中文字幕,亚洲VA中文慕无码久久AV

SLTS278J November 2010 – March 2020 PTH08T250W

PRODUCTION DATA.

封裝選項

請參考 PDF 數據表獲取器件具體的封裝圖。

機械數據 (封裝 | 引腳)

BCU|22
ECT|22
ECU|22

散熱焊盤機械數據 (封裝 | 引腳)

訂購信息

slts278j_oa

7.2 Electrical Characteristics

T_A = 25°C, V_I = 12 V, V_O = 3.3 V, C_I = 1000 µF, C_O = 660 µF, and I_O = I_O max (unless otherwise stated)

PARAMETER		TEST CONDITIONS			MIN	TYP	MAX	UNIT
I_O	Output current	Over V_O range	25°C, natural convection		0		48	A
I_O	Output current	Over V_O range	60°C, 200 LFM		0		50	A
V_I	Input voltage range	Over I_O range		0.7 ≤ V_O < 1.2	4.5		14 ⁽²⁾	V
V_I	Input voltage range	Over I_O range		1.2 ≤ V_O ≤ 3.6	4.5		14	V
V_OADJ	Output voltage adjust range	Over I_O range			0.7		3.6	V
V_O	Set-point voltage tolerance					±0.5	±1 ⁽¹⁾	%V_o
	Temperature variation	–40°C < T_A < 85°C				±0.3		%V_o
	Line regulaltion	Over V_I range				±5		mV
	Load regulation	Over I_O range				±5		mV
	Total output variation	Includes set-point, line, load, –40°C ≤ T_A ≤ 85°C					±1.5 ⁽¹⁾	%V_o
η	Efficiency	I_O = 30 A	R_SET = 1.62 kΩ, V_O = 3.3 V			94%
			R_SET = 5.23 kΩ, V_O = 2.5 V			93%
			R_SET = 12.7 kΩ, V_O = 1.8 V			91%
			R_SET = 19.6 kΩ, V_O = 1.5 V			90%
			R_SET = 35.7 kΩ, V_O = 1.2 V			88%
			R_SET = 63.4 kΩ, V_O = 1.0 V			86%
			R_SET = open, V_O = 0.7 V			83%
	V_O Ripple (peak-to-peak)	20-MHz bandwidth				10 ⁽²⁾		mV_PP
I_LIM	Overcurrent threshold	Reset, followed by auto-recovery				85		A
t_tr	Transient response	2.5 A/µs load step 50 to 100% I_Omax	w/o TurboTrans C_O = 660 μF, Type C	Recovery time		100		µs
ΔV_tr			w/o TurboTrans C_O = 660 μF, Type C	V_O over/undershoot		160		mV
t_trTT			w/ TurboTrans C_O = 3300 μF, Type C R_TT = short	Recovery time		100		µs
ΔV_trTT			w/ TurboTrans C_O = 3300 μF, Type C R_TT = short	V_O over/undershoot		45		mV
I_IL	Track input current (pin 20)	Pin to GND					–130⁽³⁾	µA
dV_track/dt	Track slew rate capability	C_O ≤ C_O(max)					1	V/ms
UVLO_ADJ	Adjustable Under-voltage lockout (pin 21)	V_Iincreasing, R_UVLO = OPEN				4.3	4.45	V
		V_I decreasing, R_UVLO = OPEN			4.0	4.2
		Hysteresis, R_UVLO ≤ 127 kΩ				1.0
	Inhibit control (pin 21)	Input high voltage (V_IH)					Open⁽⁴⁾	V
		Input low voltage (V_IL)			-0.2		0.6	V
		Input low current (I_IL ), Pin 21 to GND				-125		µA
I_in	Input standby current	Inhibit (pin 21) to GND, Track (pin 20) open				35		mA
f_s	Switching frequency	Over V_I and I_O ranges, SmartSync (pin 22) to GND				600 ⁽⁵⁾		kHz
f_SYNC	Synchronization (SYNC) control (pin 22)	Synchronization frequency applied to pin 22			240 ⁽⁵⁾		400 ⁽⁵⁾	kHz
V_SYNCH		SYNC High-Level Input Voltage			2.0		5.5	V
V_SYNCL		SYNC Low-Level Input Voltage					0.8	V
t_SYNC		SYNC Minimum Pulse Width			200			nSec
C_I	External input capacitance	Nonceramic			1000 ⁽⁶⁾			µF
C_I	External input capacitance	Ceramic				22		µF
C_O	External output capacitance	without TurboTrans	Capacitance Value	Non-ceramic	660 ⁽⁷⁾		8000 ⁽⁸⁾	µF
			Capacitance Value	Ceramic			1000⁽¹⁰⁾	µF
			Equivalent series resistance (non-ceramic)		3			mΩ
		with TurboTrans	Capacitance Value	Non-ceramic	660 ⁽⁷⁾⁽⁹⁾			µF
			Capacitance Value	Ceramic			1000⁽¹⁰⁾	µF
			Capacitance × ESR product (C_O × ESR)		1000		10000 ⁽⁹⁾	µF×mΩ
MTBF	Reliability	Per Telcordia SR-332, 50% stress, T_A = 40°C, ground benign			2.79			10⁶ Hr

(1) The set-point voltage tolerance is affected by the tolerance and stability of R_SET. The stated limit is unconditionally met if R_SET has a tolerance of 1% with 100 ppm/°C or better temperature stability.

(2) For output voltages less than 1.2 V, the output ripple may increase (up to 2×) when operating at input voltages greater than (V_O × 12). Adjusting the switching frequency using the SmartSync feature may increase or decrease this ratio. Review the SmartSync section of the Application Information for further guidance.

(3) A low-leakage (<100 nA), open-drain device, such as MOSFET or voltage supervisor IC, is recommended to control pin 20. The open-circuit voltage is less than 8 V_dc.

(4) Do not place an external pull-up on this pin. If it is left open-circuit, the module operates when input power is applied. A small, low-leakage (<100 nA) MOSFET is recommended for control. For additional information, see the related application section.

(5) The PTH08T250W is a two-phase power module. Each phase switches at 300 kHz typical, 180° out-of-phase from one another. The over-all switching frequency is 600 kHz typical. SmartSync controls the frequency of an individual phase. When using SmartSync the external synchronization frequency must be present before a valid input voltage is present, or before the release of inhibit control.

(6) A 1000 µF electrolytic input capacitor is required for proper operation. When operating at an input voltage greater than 8V the minimum required input capacitance may be reduced to 560μF. The input capacitor must be rated for a minimum of 600 mA rms of ripple current.

(7) 660 µF of external non-ceramic output capacitance is required for basic operation. Adding additional capacitance at the load further improves transient response. See the Capacitor Application Information section and the TuboTrans Technology section for more guidance.

(8) This is the calculated maximum when not using TurboTrans technology. This value includes both ceramic and non-ceramic capacitors. The minimum ESR requirement often results in a lower value of output capacitance. See the Capacitor Application Information section for more guidance.

(9) When using TurboTrans technology, a minimum value of output capacitance is required for proper operation. Additionally, low ESR capacitors are required for proper operation. See the Overview: TurboTrans™ Technology section for further guidance.

(10) Ceramic output capacitance may be added in addition to the required non-ceramic output capacitance. The amount of ceramic capacitance must be less than the non-ceramic capacitance, not to exceed 1000 µF.