米6体育平台手机版

ZHCSIQ0F August 2018 – August 2020 TPS2120 , TPS2121

PRODUCTION DATA

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请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)

RUX|12

散热焊盘机械数据 (封装 | 引脚)

订购信息

7.5 Electrical Characteristics

over operating free-air temperature range (unless otherwise noted)

PARAMETER		TEST CONDITIONS	T_J	MIN	TYP	MAX	UNIT
INPUT SOURCE (IN1, IN2)
I_{Q, INx}	Quiescent Current (INx Powering OUT) ⁽¹⁾	OUT = Open	-40°C to 125°C		300	400	µA
I_{SBY, INx}	Standby Current (INx not powering OUT)⁽¹⁾	V_OUT = V_INx	25°C	0	15	25	µA
I_{SBY, INx}	Standby Current (INx not powering OUT)⁽¹⁾	V_OUT = V_INx	-40°C to 125°C			25	µA
I_{LK, INx}	Leakage Current (INx to OUT)	\|V_INx - V_OUT\| ≤ 5V	25°C	-1		1	µA
			-40°C to 85°C	-5		5	µA
			-40°C to 125°C	-80		80	µA
		\|V_INx - V_OUT\| ≤ 22V	25°C	-1		1	µA
			-40°C to 85°C	-35		35	µA
			-40°C to 125°C	-500		500	µA
V_{UV, INx}	Undervoltage Lockout	V_INx Rising	-40°C to 125°C	2.5	2.65	2.8	V
V_{UV, INx}	Undervoltage Lockout	V_INx Falling	-40°C to 125°C	2.4	2.55	2.7	V
OUTPUT SWITCHOVER (OUT)
t_SW	Switchover Time	V_OUT < V_INx CP2 or SEL < V_REF	-40°C to 125°C		100		µs
t_FSW	Fast Switchover Time (TPS2121 only)	V_OUT < V_INx CP2 ≥ V_REF	-40°C to 125°C		5		µs
V_COMP	Input Voltage Comparator (V_IN2 referenced to V_IN1)	V_IN1 ≥ V_IN2	-40°C to 125°C	0	280	600	mV
V_COMP	Input Voltage Comparator (V_IN2 referenced to V_IN1)	V_IN1 > V_IN2, Falling Hysteresis	-40°C to 125°C	2.5	3.5	4.5	%
ON-RESISTANCE (INx to OUT)
R_ON	ON-State Resistance (TPS2120)	I_OUT = -200 mA V_PRI > V_REF V_INx ≥ 5.0 V	25°C		62	75	mΩ
			-40°C to 85°C			90	mΩ
			-40°C to 105°C			100	mΩ
			-40°C to 125°C			120	mΩ
	ON-State Resistance (TPS2121)	I_OUT = -200 mA V_PRI > V_REF V_INx ≥ 5.0 V	25°C		56	70	mΩ
			-40°C to 85°C			85	mΩ
			-40°C to 105°C			90	mΩ
			-40°C to 125°C			100	mΩ
CURRENT LIMIT (ILM)
I_LM⁽²⁾	Output Current Limit (TPS2120)	R_ILM = 31.6kΩ	-40°C to 125°C	3	3.5	4	A
		R_ILM = 46.4kΩ	-40°C to 125°C	2	2.5	3	A
		R_ILM = 85kΩ	-40°C to 125°C	1	1.5	2	A
		R_ILM < 1kΩ	-40°C to 125°C	1.5	2.5	3.5	A
	Output Current Limit (TPS2121)	R_ILM = 18.7kΩ	-40°C to 125°C	4.6	5.2	5.8	A
		R_ILM = 22.1kΩ	-40°C to 125°C	4	4.5	5	A
		R_ILM = 29.8kΩ	-40°C to 125°C	3	3.5	4	A
		R_ILM = 44.2kΩ	-40°C to 125°C	2	2.5	3	A
		R_ILM = 80kΩ	-40°C to 125°C	1	1.5	2	A
		R_ILM < 1kΩ	-40°C to 125°C	1.5	2.5	3.5	A
t_LM⁽³⁾	Current Limit Response Time	Output Steady State	-40°C to 125°C		250		µs
CONTROL PINS (PRI, SEL, OV1, OV2)
V_{REF, x}	Internal Voltage Reference	V_PR1, V_CP2, V_OV1, V_OV2 Rising	-40°C to 125°C	1.01	1.06	1.1	V
V_{REF, x}	Internal Voltage Reference	V_PR1, V_CP2, V_OV1, V_OV2 Falling	-40°C to 125°C	0.99	1.04	1.09	V
V_OFST	Comparator Offset Voltage (TPS2121 only)	V_PR1 > V_REF V_CP2 > V_REF	-40°C to 125°C	5	20	40	mV
I_{LK, x}	Pin Leakage Current	V_PR1, V_CP2, V_OV1, V_OV2 = 0 V to 5.5 V	-40°C to 125°C	-0.1		0.1	µA
STATUS INDICATION PIN (ST)
I_{LK, ST}	Pin Leakage	V_ST = 0 V to 5.5 V	-40°C to 125°C	-0.1		0.1	µA
t_ST	Status Delay	L to H	-40°C to 125°C		1		µs
FAST REVERSE CURRENT BLOCKING (RCB)
I_RCB	Fast Reverse Current Detection Threshold	V_OUT > V_INx	-40°C to 125°C	0.2	1	2	A
V_RCB	RCB Release Voltage	V_OUT > V_INx	-40°C to 125°C	0	25	50	mV
t_RCB	Fast Reverse Current Blocking Response Time		-40°C to 125°C		10		µs
THERMAL SHUTDOWN (TSD)
T_SD	Thermal Shutdown	Shutdown	Rising		160		°C
T_SD	Thermal Shutdown	Recovery	Falling		150		°C

(1) When PR1 < V_REF, CP2 < V_REF, and |V_IN1-V_IN2| < 1V, Quiescent current can be drawn from both IN1 and IN2 with combined current not to exceed I_Q,INx.

(2) The current limit can be measured by forcing a voltage differential from VIN to VOUT. This value must be at least 200mV greater than the voltage drop across the device at the current limit threshold (I_LM x R_ON(MAX)). For example, the TPS2121 would need a minimum voltage drop of (1.5A x 100mΩ + 200mV) = 350mV from VIN to VOUT for a current limit setting of 1.5A (typical).

(3) For more information on device behavior during short circuit conditions, see Section 9.3.3.