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ZHCSHN0A February 2018 – April 2018 TPSM84424

PRODUCTION DATA.

封裝選項

機械數據 (封裝 | 引腳)

MOL|24
- MPQF489

散熱焊盤機械數據 (封裝 | 引腳)

訂購信息

zhcshn0a_oa

6.5 Electrical Characteristics

Over –40°C to +105°C ambient temperature, V_IN = 12 V, V_OUT = 1.2 V, I_OUT = I_OUTmax, f_sw = 450 kHz (unless otherwise noted); C_IN1= 2× 10-µF, 25-V, 1210 ceramic; C_IN2 = 100-µF, 50-V, electrolytic; C_OUT = 4× 47-µF, 10-V, 1210 ceramic. Minimum and maximum limits are specified through production test or by design. Typical values represent the most likely parametric norm and are provided for reference only.

PARAMETER		TEST CONDITIONS		MIN	TYP	MAX	UNIT
INPUT VOLTAGE (V_IN)
V_IN	Input voltage	Over I_OUT range		4.5⁽¹⁾		17	V
UVLO	V_IN undervoltage lockout	V_IN increasing			4.1	4.3	V
UVLO	V_IN undervoltage lockout	V_IN decreasing		3.7	3.9		V
I_SHDN	Shutdown supply current	V_EN = 0 V			3	11	µA
OUTPUT VOLTAGE (V_OUT)
V_OUT(ADJ)	Output voltage adjust	Over I_OUT range		0.6		10	V
V_OUT(Ripple)	Output voltage ripple	20-MHz bandwidth			16		mV
FEEDBACK
V_FB	Feedback voltage⁽²⁾	T_A = 25°C, I_OUT = 0 A		0.596	0.6	0.604	V
	Feedback voltage⁽²⁾	–40°C ≤ T_J ≤ 125°C, I_OUT = 0 A		0.595	0.6	0.605	V
	Line regulation	Over V_IN range, T_A = 25°C, I_OUT = 0 A			0.1		mV
	Load regulation	Over I_OUT range, T_A = 25°C			0.8		mV
CURRENT
I_OUT	Output current	Natural convection, T_A = 25°C		0		4	A
I_OUT	Overcurrent threshold				11		A
PERFORMANCE
?	Efficiency	V_IN = 12 V, I_OUT = 4 A	V_OUT = 5 V, f_SW = 1.2 MHz		94%
			V_OUT = 3.3 V, f_SW = 1.0 MHz		93%
			V_OUT = 1.8 V, f_SW = 600 kHz		91%
			V_OUT = 1.2 V, f_SW = 450 kHz		87%
			V_OUT = 1 V, f_SW = 400 kHz		86%
	Transient response voltage deviation	25% to 75% load step, 2A/µs slew rate, R_TT = 4.02 kΩ, C_OUT = 200-µF ceramic + 220-µF polymer			27		mV
	Transient response voltage deviation	25% to 75% load step, 2A/µs slew rate, R_TT = 3.40 kΩ, C_OUT = 200-µF ceramic			35		mV
SOFT START
t_SS	Internal soft start time				1.25		ms
I_SS	Soft start charge current				5		µA
THERMAL
T_SHDN	Thermal shutdown	Shutdown temperature			170		°C
T_SHDN	Thermal shutdown	Hysteresis			15		°C
ENABLE (EN)
V_EN-H	EN rising threshold				1.2	1.26	V
V_EN-HYS	EN falling threshold			1.1	1.15		V
I_EN	EN pin sourcing current	V_EN = 1.1 V			1.2		µA
I_EN	EN pin sourcing current	V_EN = 1.3 V			3.6		µA
POWER GOOD (PGOOD)
V_PGOOD	PGOOD thresholds	V_OUT rising (fault)			108%
		V_OUT falling (good)			106%
		V_OUT rising (good)			91%
		V_OUT falling (fault)			89%
	Minimum V_IN for valid PGOOD	V_PGOOD < 0.5 V, I_PGOOD = 2 mA			0.7	1	V
	PGOOD low voltage	2-mA pullup, V_EN = 0 V				0.3	V
CAPACITANCE
C_IN	External input capacitance	Ceramic type		20⁽³⁾			µF
C_IN	External input capacitance	Non-ceramic type			100⁽³⁾		µF
C_OUT	External output capacitance			min⁽⁴⁾		1500⁽⁵⁾	µF

(1) For output voltages 0.6 V to < 5.5 V, the recommended minimum V_IN is 4.5 V or (V_OUT + 1 V), whichever is greater. For output voltages 5.5 V to < 9 V, the recommended minimum V_IN is (V_OUT + 2 V). For output voltages 9 V to 10 V, the recommended minimum V_IN is (V_OUT + 3 V).

(2) The overall output voltage tolerance will be affected by the tolerance of the external R_FBT and R_FBBresistors.

(3) A minimum of 20-µF ceramic input capacitance is required for proper operation. An additional 100 µF of bulk capacitance is recommended for applications with transient load requirements. See the Input Capacitor section for further guidance.

(4) The minimum amount of required output capacitance varies depending on the output voltage (see Standard Component Values Table). A minimum amount of ceramic output capacitance is required. Locate the capacitance close to the device. Adding additional ceramic or non-ceramic capacitance close to the load improves the response of the regulator to load transients.

(5) The maximum output capacitance can be made up of all ceramic type or a combination of ceramic and a single non-ceramic type. See the Low-ESR Output Capacitors Section for requirements of non-ceramic output capacitors.