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ZHCSGG8F July 2011 – March 2018 LM25118

PRODUCTION DATA.

封裝選項

機械數據 (封裝 | 引腳)

PWP|20
- MHTS001H

散熱焊盤機械數據 (封裝 | 引腳)

PWP|20
- PPTD289A

訂購信息

6.5 Electrical Characteristics

Unless otherwise specified, the following conditions apply: VIN = 24 V, VCCX = 0 V, EN = 5 V, RT = 29.11 kΩ, no load on LO and HO. Typical values apply for T_J = 25°C; minimum and maximum values apply over the full junction temperature range for operation: −40°C to +125°C.⁽⁴⁾⁽⁴⁾

PARAMETER		TEST CONDITIONS	MIN	TYP	MAX	UNIT
VIN SUPPLY
I_BIAS	VIN operating current	VCCX = 0 V		4.5	5.5	mA
I_BIASX	VIN operating current	VCCX = 5 V		1	1.85	mA
I_STDBY	VIN shutdown current	EN = 0 V		1	10	µA
VCC REGULATOR
V_CC(REG)	VCC regulation	VCCX = 0 V	6.8	7	7.2	V
V_CC(REG)	VCC regulation	VCCX = 0 V, VIN = 6 V	5	5.25	5.5	V
	VCC sourcing current limit	VCC = 0	21	35		mA
	VCCX switch threshold	VCCX rising	3.68	3.85	4.02	V
	VCCX switch hysterisis			0.2		V
	VCCX switch RDS(ON)	ICCX = 10 mA		5	12	Ω
	VCCX switch leakage	VCCX = 0 V		0.5	1	µA
	VCCCX pulldown resistance	VCCX = 3 V		70		kΩ
	VCC undervoltage lockout voltage	VCC rising	3.52	3.7	3.86	V
	VCC undervoltage hysterisis			0.21		V
	HB DC bias current	HB-HS = 15 V		205	260	µA
	VC LDO mode turnoff			10		V
EN INPUT
V_EN(OFF)	EN input low threshold	V_EN falling			0.5	V
V_EN(ON)	EN input high threshold	V_EN rising	3			V
	EN input bias current	V_EN = 3 V	–1		1	µA
	EN input bias current	V_EN = 0.5 V	–1		1	µA
	EN input bias current	V_EN = 42 V		50		µA
UVLO THRESHOLDS
UVLO	UVLO standby threshold	UVLO Rising	1.191	1.231	1.271	V
ΔUVLO	UVLO threshold hysteresis			0.105		V
	UVLO pullup current source	UVLO = 0 V		5		µA
	UVLO pulldown R_DS(ON)			100	200	Ω
SOFT START
	SS current source	SS = 0 V	7.5	10.5	13.5	µA
	SS to FB offset	FB = 1.23 V		150		mV
	SS output low voltage	Sinking 100 µA, UVLO = 0 V		7		mV
ERROR AMPLIFIER
V_REF	FB reference voltage	Measured at FB pin, FB = COMP	1.212	1.23	1.248	V
	FB input bias current	FB = 2 V		20	200	nA
	COMP sink/source current		3			mA
A_OL	DC gain			80		dB
f_BW	Unity bain bandwidth			3		MHz
PWM COMPARATORS
t_HO(OFF)	Forced HO off-time		305	400	495	ns
T_ON(MIN)	Minimum HO on-time			70		ns
	COMP to comparator offset			200		mV
OSCILLATOR (RT PIN)
f_SW1	Frequency 1	RT = 29.11 kΩ	178	200	224	kHz
f_SW2	Frequency 2	RT = 9.525 kΩ	450	515	575	kHz
SYNC
	Sync threshold falling			1.3		V
CURRENT LIMIT
V_CS(TH)	Cycle-by-cycle sense voltage threshold (CS-CSG)	RAMP = 0 buck mode	–103	–125	–147	mV
V_CS(THX)	Cycle-by-cycle sense voltage threshold (CS-CSG)	RAMP = 0 buck-boost mode	–218	–255	–300	mV
	CS bias current	CS = 0 V		45	60	µA
	CSG bias current	CSG = 0 V		45	60	µA
	Current limit fault timer			256		cycles
RAMP GENERATOR
I_R2	RAMP current 2	VIN = 12 V, VOUT = 12 V	95	115	135	µA
I_R3	RAMP current 3	VIN = 5 V, VOUT = 12 V	65	80	95	µA
	VOUT bias current	VOUT = 42 V		245		µA
LOW-SIDE (LO) GATE DRIVER
V_OLL	LO low-state output voltage	I_LO = 100 mA		0.14	0.23	V
V_OHL	LO high-state output voltage	I_LO = –100 mA V_OHL = V_CC-V_LO		0.25		V
	LO rise time	C-load = 1 nF, VCC = 8 V		16		ns
	LO fall time	C-load = 1 nF, VCC = 8 V		14		ns
I_OHL	Peak LO source current	V_LO = 0 V, VCC = 8 V		2.2		A
I_OLL	Peak LO sink current	V_LO = VCC = 8 V		2.7		A
HIGH-SIDE (HO) GATE DRIVER
V_OLH	HO low-state output voltage	I_HO = 100 mA		0.135	0.21	V
V_OHH	HO high-state output voltage	I_HO = –100 mA, V_OHH = V_HB-V_OH		0.25		V
	HO rise time	C-load = 1 nF, VCC = 8 V		14		ns
	HO fall time	C-load = 1 nF, VCC = 8 V		12		ns
I_OHH	Peak HO source current	V_HO = 0 V, VCC = 8 V		2.2		A
I_OLH	Peak HO sink current	V_HO = VCC = 8 V		3.5		A
	HB-HS undervoltage lockout			3		V
BUCK-BOOST CHARACTERISTICS⁽³⁾
	Buck-boost mode	Buck duty cycle	69%	75%	80%
THERMAL
T_SD	Thermal shutdown junction temperature			165		°C
ΔT_SD	Thermal shutdown hysterisis			25		°C

(1) Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in the Recommended Operating Conditions is not implied. Operating Range conditions indicate the conditions at which the device is functional and the device should not be operated beyond such conditions. For ensured specifications and conditions, see Electrical Characteristics.

(2) VIN ≥ 5.0 V is required to initially start the controller.

(3) When the duty cycle exceeds 75%, the LM25118 controller gradually phases into the Buck-Boost mode.

(4) Minimum and Maximum limits are ensured through test, design, or statistical correlation. Typical values represent the most likely parametric norm at T_J = 25°C, and are provided for reference purposes only.