米6体育平台手机版

ZHCS979F June 2012 – October 2020 TPS53318 , TPS53319

PRODUCTION DATA

封装选项

机械数据 (封装 | 引脚)

DQP|22
- MPSS023D

散热焊盘机械数据 (封装 | 引脚)

DQP|22
- QFND267C

订购信息

7.5 Electrical Characteristics

Over recommended free-air temperature range, V_VDD = 12 V (unless otherwise noted)

PARAMETER			CONDITIONS	MIN	TYP	MAX	UNIT
SUPPLY CURRENT
V_VIN	VIN pin power conversion input voltage			1.5		22	V
V_VDD	Supply input voltage			4.5		25.0	V
I_VIN(leak)	VIN pin leakage current		V_EN = 0 V			1	µA
I_VDD	VDD supply current		T_A = 25°C, No load, V_EN = 5 V, V_VFB = 0.630 V		420	590	µA
I_VDDSDN	VDD shutdown current		T_A = 25°C, No load, V_EN = 0 V			110	µA
INTERNAL REFERENCE VOLTAGE
V_VFB	VFB regulation voltage		CCM condition⁽¹⁾		0.600		V
V_VFB	VFB regulation voltage		T_A = 25°C	0.597	0.600	0.603	V
			0°C ≤ T_A ≤ 85°C	0.5952	0.600	0.6048
			–40°C ≤ T_A ≤ 85°C	0.594	0.600	0.606
I_VFB	VFB input current		V_VFB = 0.630 V, T_A = 25°C		0.01	0.20	µA
LDO OUTPUT
V_VREG	LDO output voltage		0 mA ≤ I_VREG ≤ 30 mA	4.77	5.00	5.36	V
I_VREG	LDO output current⁽¹⁾		Maximum current allowed from LDO			30	mA
V_DO	Low drop out voltage		V_VDD = 4.5 V, I_VREG = 30 mA			250	mV
BOOT STRAP SWITCH
V_FBST	Forward voltage		V_VREG-VBST, I_F = 10 mA, T_A = 25°C		0.1	0.2	V
I_VBSTLK	VBST leakage current		V_VBST = 23 V, V_SW = 17 V, T_A = 25°C		0.01	1.50	µA
DUTY AND FREQUENCY CONTROL
t_OFF(min)	Minimum off-time		T_A = 25°C	150	260	400	ns
t_ON(min)	Minimum on-time		V_IN = 17 V, V_OUT = 0.6 V, f_SW = 1 MHz, T_A = 25 °C⁽¹⁾		35		ns
SOFT-START TIMING
t_SS	Internal soft-start time from V_OUT = 0 V to 95% of V_OUT		R_MODE = 39 kΩ		0.7		ms
			R_MODE = 100 kΩ		1.4
			R_MODE = 200 kΩ		2.8
			R_MODE = 470 kΩ		5.6
OUTPUT VOLTAGE DISCHARGE
I_DSCHG	Output voltage discharge current		V_EN = 0 V, V_SW = 0.5 V	5.0	6.6	9.0	mA
POWERGOOD
V_THPG	PG threshold		PG in from lower	92.5%	95.0%	98.5%
			PG in from higher	107.5%	110.0%	112.5%
			PG hysteresis	2.5%	5.0%	7.5%
R_PG	PG transistor on-resistance			15	30	60	Ω
t_PGDEL	PG delay		Delay for PG in	0.8	1	1.2	ms
LOGIC THRESHOLD AND SETTING CONDITIONS
V_EN	EN Voltage		Enable	1.0	1.3	1.6	V
V_EN	EN Voltage		Disable	0.8	1.0	1.2	V
I_EN	EN Input current		V_EN = 5 V			1.0	µA
f_SW	Switching frequency		R_RF = 0 Ω to GND, T_A = 25°C⁽²⁾	200	250	300	kHz
			R_RF = 187 kΩ to GND, T_A = 25°C⁽²⁾	250	300	350
			R_RF = 619 kΩ, to GND, T_A = 25°C⁽²⁾	350	400	450
			R_RF = Open, T_A = 25°C⁽²⁾	450	500	550
			R_RF = 866 kΩ to VREG, T_A = 25°C⁽²⁾	540	600	660
			R_RF = 309 kΩ to VREG, T_A = 25°C⁽²⁾	670	750	820
			R_RF = 124 kΩ to VREG, T_A = 25°C⁽²⁾	770	850	930
			R_RF = 0 Ω to VREG, T_A = 25°C⁽²⁾	880	970	1070
PROTECTION: CURRENT SENSE
I_TRIP	TRIP source current		V_TRIP = 1 V, T_A = 25°C		10		µA
TC_ITRIP	TRIP current temperature coefficient		On the basis of 25°C⁽²⁾		3000		ppm/°C
V_TRIP	Current limit threshold setting range	TPS53318	V_TRIP-GND	0.4		1.5	V
V_TRIP	Current limit threshold setting range	TPS53319	V_TRIP-GND			2.4	V
V_OCL	Current limit threshold		V_TRIP = 1.2 V	37.5			mV
V_OCL	Current limit threshold		V_TRIP = 0.4		12.5		mV
V_OCLN	Negative current limit threshold		V_TRIP = 1.2 V		–37.5		mV
V_OCLN	Negative current limit threshold		V_TRIP = 0.4 V		–12.5		mV
I_OCP	Valley current limit threshold		R_TRIP = 66.5 kΩ, 0°C ≤ T_A ≤ 125°C	4.6	5.4	6.3	A
I_OCP	Valley current limit threshold		R_TRIP = 66.5 kΩ, –40°C ≤ T_A ≤ 125°C	4.4	5.4	6.3	A
V_AZCADJ	Auto zero cross adjustable range		Positive	3	15		mV
V_AZCADJ	Auto zero cross adjustable range		Negative		–15	–3	mV
PROTECTION: UVP and OVP
V_OVP	OVP trip threshold		OVP detect	115%	120%	125%
t_OVPDEL	OVP propagation delay		VFB delay with 50-mV overdrive		1		µs
V_UVP	Output UVP trip threshold		UVP detect	65%	70%	75%
t_UVPDEL	Output UVP propagation delay			0.8	1.0	1.2	ms
t_UVPEN	Output UVP enable delay		From enable to UVP workable	1.5	2.3	3.0	ms
UVLO
V_UVVREG	VREG UVLO threshold		Wake up	4.00	4.20	4.33	V
V_UVVREG	VREG UVLO threshold		Hysteresis		0.25		V
PROTECTION: UVP and OVP
V_OVP	OVP trip threshold		OVP detect	115%	120%	125%
t_OVPDEL	OVP propagation delay		VFB delay with 50-mV overdrive		1		µs
V_UVP	Output UVP trip threshold		UVP detect	65%	70%	75%
t_UVPDEL	Output UVP proprogation delay			0.8	1.0	1.2	ms
t_UVPEN	Output UVP enable delay		From enable to UVP workable	1.5	2.3	3.0	ms
UVLO
V_UVVREG	VREG UVLO threshold		Wake up	4.00	4.20	4.33	V
V_UVVREG	VREG UVLO threshold		Hysteresis		0.25		V
THERMAL SHUTDOWN
T_SDN	Thermal shutdown threshold		Shutdown temperature⁽²⁾		145		°C
T_SDN	Thermal shutdown threshold		Hysteresis⁽²⁾		10		°C

(1) Ensured by design. Not production tested.

(2) Not production tested. Test condition is V_IN = 12 V, V_OUT = 1.2 V, I_OUT = 5 A using application circuit shown in Figure 9-12.