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ZHCSH82 December 2017 LM25574-Q1

PRODUCTION DATA.

封裝選項

機械數(shù)據(jù) (封裝 | 引腳)

PW|16
- MPDS361B

散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)

訂購信息

6.5 Electrical Characteristics

at T_J = 25°C, and V_IN = 24 V, R_T = 32.4 kΩ (unless otherwise noted).⁽¹⁾

PARAMETER		TEST CONDITIONS		MIN	TYP	MAX	UNIT
STARTUP REGULATOR
V_CCReg	V_CC Regulator Output	T_J = –40°C to +125°C		6.85	7.15	7.45	V
	V_CC LDO Mode turn-off				9		V
	V_CC Current Limit	V_CC = 0 V			25		mA
VCC SUPPLY
	V_CC UVLO Threshold	(V_CC increasing)	T_J = –40°C to +125°C	5.03	5.35	5.67	V
	V_CC Undervoltage Hysteresis				0.35		V
	Bias Current (Iin)	FB = 1.3 V	T_J = –40°C to +125°C		3.7	4.5	mA
	Shutdown Current (Iin)	SD = 0 V	T_J = –40°C to +125°C		48	70	µA
SHUTDOWN THRESHOLDS
	Shutdown Threshold	(SD Increasing)	T_J = –40°C to +125°C	0.47	0.7	0.9	V
	Shutdown Hysteresis				0.1		V
	Standby Threshold	(Standby Increasing)	T_J = –40°C to +125°C	1.17	1.225	1.28	V
	Standby Hysteresis				0.1		V
	SD Pull-up Current Source				5		µA
SWITCH CHARACTERSICS
	Buck Switch Rds(on)	T_J = –40°C to +125°C			750	1500	mΩ
	BOOST UVLO				4		V
	BOOST UVLO Hysteresis				0.56		V
	Pre-charge Switch Rds(on)				70		Ω
	Pre-charge Switch on-time				250		ns
CURRENT LIMIT
	Cycle by Cycle Current Limit	RAMP = 0 V	T_J = –40°C to +125°C	0.6	0.7	0.8	A
	Cycle by Cycle Current Limit Delay	RAMP = 2.5 V			75		ns
SOFT-START
	SS Current Source	T_J = –40°C to +125°C		7	10	14	µA
OSCILLATOR
	Frequency 1	T_J = –40°C to +125°C		180	200	220	kHz
	Frequency 2	R_T = 11 kΩ	T_J = –40°C to +125°C	425	485	545	kHz
	SYNC Source Impedance				11		kΩ
	SYNC Sink Impedance				110		Ω
	SYNC Threshold (falling)				1.3		V
	SYNC Frequency	R_T = 11 kΩ	T_J = –40°C to +125°C	550			kHz
	SYNC Pulse Width Minimum	T_J = –40°C to +125°C		15			ns
RAMP GENERATOR
	Ramp Current 1	V_IN = 36 V, V_OUT = 10 V	T_J = –40°C to +125°C	272	310	368	µA
	Ramp Current 2	V_IN = 10 V, V_OUT = 10 V	T_J = –40°C to +125°C	36	50	64	µA
PWM COMPARATOR
	Forced Off-time	T_J = –40°C to +125°C		416	500	575	ns
	Min On-time				80		ns
	COMP to PWM Comparator Offset				0.7		V
ERROR AMPLIFIER
	Feedback Voltage	Vfb = COMP	T_J = –40°C to +125°C	1.207	1.225	1.243	V
	FB Bias Current				17		nA
	DC Gain				70		dB
	COMP Sink / Source Current	T_J = –40°C to +125°C		3			mA
	Unity Gain Bandwidth				3		MHz
DIODE SENSE RESISTANCE
D_SENSE					250		mΩ
THERMAL SHUTDOWN
Tsd	Thermal Shutdown Threshold				165		°C
Tsd	Thermal Shutdown Hysteresis				25		°C

(1) Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are assured through correlation using Statistical Quality Control (SQC) methods. Limits are used to calculate Texas Instruments' Average Outgoing Quality Level (AOQL).